DOOM (1993)

A second controller is required for three achievements. Without a second controller, these modes cannot be played and there is no online multiplayer.

Not So Bad in DOOM (1993)
Not So Bad463 (75)
Beat every level on Nightmare in co-operative mode
  • Unlocked by 39 tracked gamers (3% - TA Ratio = 6.17) 1,492

Rookie in DOOM (1993)
Rookie37 (20)
Get 25 kills in deathmatch
  • Unlocked by 445 tracked gamers (30% - TA Ratio = 1.84) 1,492

Showstopper in DOOM (1993)
Showstopper105 (50)
Get 100 kills in deathmatch
  • Unlocked by 343 tracked gamers (23% - TA Ratio = 2.10) 1,492

DOOM (1993) is yet another port of the classic MS-DOS game. For those that are not familiar with the game, it is a first-person shooter. The game puts the player on a Mars base where demons and creatures from Hell appear. The player, controlling a space marine referred to as Doomguy by fans, must navigate through the base and eventually navigate through Hell itself.

It is an extremely fast-paced game, especially on the higher difficulties. There are a variety of different weapons and enemies to contend with. It was also one of the first first-person shooters to feature a versus mode, and takes credit for coining the popular phrase "Deathmatch".

Without further ado, let's get started with the basics on the next page.

A second controller is required for three achievements. Without a second controller, these modes cannot be played and there is no online multiplayer.

Not So Bad in DOOM (1993)
Not So Bad463 (75)
Beat every level on Nightmare in co-operative mode
  • Unlocked by 39 tracked gamers (3% - TA Ratio = 6.17) 1,492

Rookie in DOOM (1993)
Rookie37 (20)
Get 25 kills in deathmatch
  • Unlocked by 445 tracked gamers (30% - TA Ratio = 1.84) 1,492

Showstopper in DOOM (1993)
Showstopper105 (50)
Get 100 kills in deathmatch
  • Unlocked by 343 tracked gamers (23% - TA Ratio = 2.10) 1,492

The Basics

Doom is a very fast-paced game, as stated before. The game consists of four episodes and eight missions in each episode (each with an additional secret level, which is called mission 9 by the game). The four episodes:

  • Knee-Deep in the Dead
  • The Shores of Hell
  • Inferno
  • Thy Flesh Consumed

All four are unlocked from the beginning of the game so you may play it in any order you choose, though if you wish to experience what little story this game actually has, then play them in order. They also seem to build in difficulty and complexity, so it is best to go in order for the sake of avoiding difficulty spikes and not getting lost as easily.

Doom is very straightforward. In order to complete a level, you must simply find the exit door. For some missions, this is very straightforward. For most other missions it is not as straightforward. Every mission has anywhere from 0-3 keys. These keys can take the form of either a keycard or a skull, depending on the episode that you are on. The three different key colors are blue, red, and yellow. On top of this, there are switches that sometimes need to be pressed to open doors. Suffice it to say that, along with the maze-like level design, missions can get very confusing very quickly. Without a walkthrough, a new player is pretty much all but certain to get lost through these missions.

Doom has five difficulty settings to offer:

  • I'm too Young to Die
  • Hey, Not too Rough
  • Hurty Me Plenty
  • Ultra-Violence
  • Nightmare

The first four difficulties are very straightforward. As is standard for first-person shooters, as the difficulty goes up so too does the amount of damage done to the player, and the amount of health enemies have increases. The number of enemies also increases.

The Nightmare difficulty is another story altogether. Not only do enemy quantity, health, and damage increase, but on this difficulty the enemies also respawn, and they respawn fairly quickly. To put into perspective what this difficulty was like, on the original release of the game, when you highlighted Nightmare the game would display a message saying "isn't even remotely fair!" Now, unfortunately, there is an achievement tied to this difficulty. You must beat the game on this difficulty in cooperative mode. Luckily cooperative mode supports up to four people and there is infinite respawning. The downside is that Bethesda in their infinite wisdom decided to make no online for this game, so it must be done with couch co-op.

As for the rest of the game, it can all be done on the lowest difficulty, I'm too Young to Die. With that being said the walkthrough will be under the assumption you are on this difficulty. However, this difficulty is extremely easy, to the point where any experienced first-person shooter player will be very bored. So I recommend a "just-for-fun" playthrough without the walkthrough on one of the higher difficulties, like Hurt Me Plenty. I don't just say this out of love for the game, this will also help you get acquainted with the mechanics, and build up some skill, which will be tremendously helpful for the Nightmare run.

Basic Controls

As is standard for first-person shooters, cn_LS in any direction will move Doomguy in that direction. Similarly, cn_RS will move the camera. In the case of this game, there is no looking up or down, you can only look left and right. Now, you may notice during gameplay that even though this is true, there are changes in elevation and even enemies that will appear above or below you. This may seem like an issue, but if there is an enemy above or below, simply aim at them as if they were on the same level as you and fire. The game will automatically shoot up or down based on where the enemy is.

An important note about the movement in this game, like some other older games, if instead of sprinting straight, back, left or right, you sprint in one of the diagonal directions, you will actually move faster than the normal cardinal directions. This is referred to as strafe running. This will be useful for the speedrun.

Speaking of firing your weapon, the standard press of cn_RT will fire your weapon. If you hold it down you will continue to fire until it is released. cn_LT is the sprint button. However, I recommend turning on auto sprint in the pause menu. When this is enabled you no longer have to hold down cn_LT to sprint all the time. Instead, cn_LT will make you walk.

In Doom, there are many doors, switches, and secrets that need to be interacted with. These can all be interacted with by using cn_A. If you are interacting with something that cannot be interacted with, Doomguy will make a bit of a grunting sound.

Lastly, in order to cycle through your weapons, you may use cn_LB or cn_RB.

The Weapons

Fists

A weapon that requires no ammo but it is extremely weak, about as strong as the pistol. It can only be used in close range. You will need to use this for an achievement, more on that later.

Image 1

Chainsaw

A more powerful close-range weapon, which again has no ammo.

Image 1

Image 1

Pistol

Your starting weapon. These use bullets as ammo. The gun is extremely weak, basically useless against anything except Zombiemen and Shotgun Guys. You will need to finish off a Cyberdemon with this weapon.

Image 1

Shotgun

Probably the weapon that you will use the most. It uses shells as it's ammo and the closer you are the more damage it does.

Image 1

Image 1

Chaingun

Otherwise known as a minigun. It uses bullets (so the same ammo reserve as the pistol) but is much more useful. It is very good against a group of small enemies or if there are one or two larger enemies. However, ammo will deplete very quickly.

Image 1

Image 1

Rocket Launcher

Fires an explosive rocket. The weapon is very powerful but firing too close will result in a lot of damage to the player since the splash damage is very large.

Image 1

Image 1

Plasma Gun

Rapid fires balls of plasma. This is one of the most powerful weapons in the game. It uses cells as ammo. There is one achievement tied to this gun, but again, more on that later.

Image 1

Image 1

BFG9000

This weapon uses cells as ammo, so the same ammo reserve as the Plasma Gun. The BFG shoots a ball of plasma and whatever enemies are in your field of view will take a great deal of damage.

Image 1

Image 1

The Enemies

There are ten different enemies, all of which you need to kill at least one of.

Zombieman

The weakest enemy in the game. They look like normal soldiers. They carry pistols and drop clips of bullets.

Zombieman

Shotgun Guy

Self-explanatory. Similar to the Zombiemen but they have Shotguns so they can do a lot more damage.

Shotgun

Imp

A brown humanoid enemy that throws fireballs at long range and uses its claws at short range.

Image 2

Demon (A.K.A. Pinky)

A pink demon, that only has a melee attack. So they are not much of a threat on their own but when there is a lot of them they can easily overwhelm the player.

Pinky

Spectre

Identical to the Demon except it is partially invisible.

Image 3

Lost Soul

Floating skulls that fly at the player to bite them.

Lost Soul

Cacodemon

A one-eyed floating head. It will bite at close range and shoot balls of lightning from longer distances.

Cacodemon

Baron of Hell

Large red minotaurs, basically. They act as a boss for episode 1 and show up as stronger enemies throughout the rest of the episodes. They have a clawing attack and will shoot green balls of energy at you, both of which do a lot of damage.

Baron

Cyberdemon

The boss of episode two and also pops as an enemy occasionally in episode 4. This enemy fires rockets at you and can move more quickly than its size might imply. It also requires a significantly large amount of damage to kill.

Image 1

Spider Mastermind

The boss of the third and fourth episode. It has a Chaingun as a weapon.

Brain


Items

Here is a list of all the useful items that the player can pick up during a level.

Health Items

This is a list of all the health pickups that can be found.

Health Bonus

Image 1

Gives the player 1% health back, up to 200% health.

Stimpack

Image 1

Gives the player 10% health back, up to 100% health.

Medikit

Image 1

Gives the player 25% health back, up to 100% health.

Supercharge

Image 1

Gives the player 100% health back, up to 200% health.

Armor Items

This is a list of all the armor pickups that can be found.

Armor Bonus

Image 1

Gives the player 1% armor back, up to 200% armor.

Armor

Image 1

Gives the player 100% armor back, up to 100% armor.

Megaarmor

Image 1

Gives the player 200% armor.

Powerups

A list of useful items and their pictures.

Backpack Full of Ammo

Image 1

Doubles the maximum ammo for all weapons and gives a small amount of ammo. The effects last until the end of the episode.

Berserk

Image 1

Gives the player a 10 times damage multiplier for their fists. The effects last until the end of the current level, or until death.

Invulnerability

Image 1

Immunity to damage for 30 seconds. It will begin blinking when it is wearing off.

Light Amplification Visor

Image 1

This will give the player full brightness in the level wherever they go, for 2 minutes. It will blink for the last 5 seconds to show that it is wearing off.

Partial Invisibility

Image 1

This will give you partial invisibility (similar to the Spectres) for 1 minute. It will blink when it is wearing off.

Radiation Shielding Suit

Image 1

Protects from damaging floors such as acid or lava.

Ammo

A list of all the ammo pickups that can be found.

Clips

Image 1

Contains 10 bullets, and 20 bullets on I'm too Young to Die and Nightmare.

Box of Bullets

Image 1

Contains 50 bullets, and 100 bullets on I'm too Young to Die and Nightmare.

Shotgun Shells

Image 1

Gives 4 shells, and 8 shells on I'm too Young to Die and Nightmare.

Box of Shotgun Shells

Image 1

Gives 20 shells, and 40 shells on I'm too Young to Die and Nightmare.

Rockets

Image 1

A single rocket, but will give 2 rockets on I'm too Young to Die and Nightmare.

Box of Rockets

Image 1

Gives 5 rockets, and 10 rockets on I'm too Young to Die and Nightmare.

Energy Cell

Image 1

Gives 20 units of energy, and 40 units of energy on I'm too Young to Die and Nightmare.

Energy Cell Pack

Image 1

Gives 100 units of energy, and 200 units of energy on I'm too Young to Die and Nightmare.

Keys

All of the below are the different keys that can be encountered to progress through locked doors. Keycards and skull keys are only found separately, the two will never mix in a level.

Blue Keycard

Image 1

Red Keycard

Image 1

Yellow Keycard

Image 1

Blue Skull Key

Image 1

Red Skull Key

Image 1

Yellow Skull Key

Image 1


Switches, Exits, and Teleporters

Here is a list of all the switches, exits, and teleporters that will be needed for the duration of the game. This part is perhaps unnecessary, but it can help to know exactly what you are looking for.

Image 1

Standard teleporter found in most levels.

Image 1

Skull switch. The eyes will light up when it is activated.

Image 1

Standard switch. It is lit red when inactive and lit green when activated.

Image 1

Red button. Will light up red when activated.

Image 1

Old man's head switch. Lights up when activated.

Image 1

Lion's head switch. Lights up when activated.

Image 1

Lever switch. It is in the down position when deactivated and in the up position when activated.

Image 1

Demon head switch. Lights up when activated.

Image 1

Exit door. Found in most levels to get the exit switch or button.

Image 1

Exit teleporter.

Image 1

Hole-in-the-floor exit. Only found in episode 4, Thy Flesh Consumed.



Completion Overview

There will be one full playthrough of all 4 episodes on the easiest difficulty. This will unlock the achievements for the completion of the different episodes. On this playthrough, you also be directed to all 4 of the secret levels and be given good points to get the miscellaneous achievements. During this playthrough, you should also monitor what times you get on each mission using this. Your time will be displayed on the mission complete screen. When entering in your times you will need to enter your times in the following format for the spreadsheet to register the time and add them up properly.

00:02:30

This will get the spreadsheet to show up 2m 30s.

It should be noted that for both the Nightmare run and the speedrun, only the first three episodes are relevant. At the time of writing this, the fourth episode, Thy Flesh Consumed is not needed for Nightmare and your mission times are not counted towards the two hours. As can be seen from the spreadsheet, even if episode 4 did count, there is around an hour of extra time that can be used if you are using the par times for each mission as a metric. So the two hours should not be an issue at all. Do note that the timer for the mission will stop if you pause the game, so whether you are using the text guide or the videos, make sure to pause the game when figuring out what to do next. Furthermore, the game actually appears to keeps your lowest recorded time for the speedrun. So if when you finish the episode 3, and the speedrun achievement does not pop, simply find a mission you had an abnormally long time on, and replay that one particular mission. If when that mission is complete, your new total time dips below 2 hours, the achievement will unlock. If you did not use the spreadsheet, or you are just using this guide after a for-fun playthrough and just doing mop-up, the missions E2M6 and E3M5 are good starting points since those missions can be fairly confusing and cause longer completion times.

Knee-Deep in the Dead

E1M1: Hangar

Start by looking to your left and going through a doorway to a staircase. To the right of the staircase is a pillar. Go to the right side of this pillar to find a button. Press the button and go back out to the room you started in. There will now be an open doorway leading outside, go through it.

Grab the blue armor pickup that is out here. Then take the only other doorway here to get to a hallway. Follow it to the end and interact with the dead end to open up the wall. Take a right here and go through the door, there will be an imp. Let him come to you and try to kill it such that it dies right under the door that opened up. Close the door on the corpse, or wait for the door to close and you will pop:

Doormat in DOOM (1993)
Doormat52 (50)
Crush a corpse in a door (Secret)
  • Unlocked by 1,377 tracked gamers (92% - TA Ratio = 1.04) 1,492

If you have trouble doing this with the imp (enemy 1/10), there will be a couple of zombiemen behind you to try it with. If you do not get it, do not worry, this achievement will most likely come naturally. Either way, kill the zombiemen (enemy 2/10).

Once that is done, continue straight through that door to the exit door, and flip the exit switch.

E1M2: Nuclear Power Plant

Save!

Take an immediate right and go through the door. Follow the stairs up, on the right is a zombieman and to the left is the red keycard. Go down the staircase that you did not take to get up here, and watch out for a zombieman at the bottom of the stairs. Go straight across the room and open the red keycard door. Follow this hallway through a room with acid to get to a dead end. When you reach this dead-end the platform will descend. There will be an imp and a zombieman, kill them.

When they are dead, grab the armor down here. At the other end of the room from where you came is a lever. Pull it and two doors to your left and right will open. Take the right door and follow the hall to the end and take a right down some stairs to find the exit door. Kill the two Zombiemen and then drop down the edge in the back of the room. Push the button down here to end the mission.

E1M3: Toxin Refinery

Save!

Secret Exit

Go out this door and take a left. Kill the lone zombieman here then go through the door. In the middle of this room is a barrel. Wait for the two Zombiemen to get close and shoot the barrel to kill both of them. This will unlock:

Timing Is Everything in DOOM (1993)
Kill 2 enemies with a single barrel explosion (Secret)
  • Unlocked by 1,368 tracked gamers (92% - TA Ratio = 1.04) 1,492

Now, reload the save. Do the same thing, except don't shoot the barrel. Instead, lead them out of the room. When they are standing next to each other, take out your Shotgun, aim in between them and shoot to kill them both. Reload your save and repeat this two more times. When you do this you will unlock:

Groovy in DOOM (1993)
Groovy22 (20)
Get 3 multi-kills with the shotgun
  • Unlocked by 1,275 tracked gamers (85% - TA Ratio = 1.08) 1,492

Then next follow the hall to the right and take the first left you can down some stairs. There will be a couple of enemies in here, so kill them. At the bottom of the stairs go left to find a button. Push it then return back up the stairs. There will now be a new path across from the door you entered this room from. You will need to be quick here. Take this path up some stairs and follow the path to the left. You will see an exposed wall (pictured below).

Go up to this before the platform raises and interact with it. The wall will open up. If you did not get there in time, just go back down the stairs and try again. When you get through, kill the imp at the bottom of the stairs. Continue through here and you will come to a pillar with a Supercharge on it. On the right side of this pillar is a switch, interact with it and take it. At this point, you should have 200% health and 200% armor (if you are close just pick the small armor and health pickups as we progress through the level. Make a save, you will want to end the level like this for an achievement. Save as much as you want as you go through the level, so if you take too much damage at any part you can just reload.

Go back up the stairs (quickly) and take the left path. You will see a similar wall as before, interact with it and go through here. In here is an imp, so kill him, then pick up the Rocket Launcher. If you face the entrance and look to your left there is a doorway in the acid. Run through it as quickly as you can. Around the corner, you will come to a platform with a switch on it. Flip this and grab the Backpack Full of Ammo. To the right of the switch is a slightly miscolored wall, interact with it and enter this secret room. In here is the Chaingun! The platform that dropped down will raise back, so take that up and drop down to get back in the room with the button that opened that hallway. Take the stairs back up and then through the door on the right to get back to the first area.

There will now be a bridge that you can cross over the acid pit. When you follow this, some walls will open up and there will be an ambush. There will be 4 zombiemen, an imp, and a pinky. When they are dead more walls will open and you can take this new path to the exit. If you take the exit with 200% health and 200% armor you will unlock:

Untouchable in DOOM (1993)
Finish a level with 200% armor and 200% health (Secret)
  • Unlocked by 582 tracked gamers (39% - TA Ratio = 1.60) 1,492

You will also pop this:

It's a Secret in DOOM (1993)
Find a secret level (Secret)
  • Unlocked by 600 tracked gamers (40% - TA Ratio = 1.57) 1,492

This will take you to E1M9 which is a secret level (1/4).

Now, the secret levels do not have to be completed, they just need to be entered, so you may reload the save you made at the beginning of the level.

Normal Exit

Go out the starting door and take a left and follow this hallway to an outdoor area. Keep following the linear path. You will come back inside and go left down another hallway. Partway down is your first Shotgun Guy (enemy 3/10). Follow this to get the blue keycard. Take it and then backtrack to the first room. When back here take the right path this time to find the blue keycard door. Go through it. Take the doorway on the left and follow it to a hallway that seems to lead to a wall with a second level above you. The floor will start raising into a staircase. Let raise and when it does there will be the exit door.

E1M4: Command Control

Save!

Okay, so there are two options here, use the speedrunning strategy or play the level traditionally. This strategy requires decent use of the strafe technique that is described in the General Hints & Tips page. I will describe both methods. The times are not extraordinarily different, but the speedrun strategy does save some time if you practice it. Another reason to get good with the speedrunning strategy is that when you do this mission on Nightmare in co-op there are far fewer enemies while taking this path.

Speedrunning Strategy

Go straight out of the starting door and hang a left after the short hallway to go up some stairs. You will come to a circular room. Take the very next door on your right and then go right down this hall. Kill the imp on the other side of the window in here so he does not bother you. Now, you will see an acid pit. If you face this acid pith (so you can see the orange key card, you should see in the back left corner there is a very small ledge on the wall. The idea here is to strafe run off the staircase onto this ledge so you can follow this ledge to the opening where the yellow keycard is. This skips a decent amount of the level. If you are going for the speedrun here I recommend making a save before attempting this so you can practice it a bit. Keep reloading until you get it in a reasonable amount of time (I used 6-7 attempts as a metric, if I hit around that number without getting it I would start over, though this could have been too conservative, there is plenty of buffer time).

Once that is done grab the yellow keycard. Go right from where you came in here to find the yellow keycard door. Press the red button here and go through the door. Through here, take a right and turn the corner to find a staircase to the exit door.

"Normal" Strategy

Go straight from the beginning and follow the hallway. At the end of the short hallway go left and up the stairs to a circular room. There will be a closed-off portion of the level in here with four doors around it. Open any of these doors for an ambush. Go in here and grab the blue key (and the Chaingun). Now go out the doorway out of this room that was to the right of where you came in (west on your map). Take a left through here, go straight and open the blue keycard door on the right.

In this room, go right and immediately go straight down the hall. At the end make a left, and then take the left path here. In here, grab the yellow keycard. Continue through this room, and go around the corner to find the yellow keycard door. Press the red button here and go through the door. Through here, take a right and turn the corner to find a staircase to the exit door.

E1M5: Phobos Lab

Save!

From the start, go straight and then make a right. Follow this all the way to a door, and a dead-end at a balcony. This will trigger a floor in this other room to rise. Backtrack down the hallway you came from and hang a right to go up some stairs. Follow this path to the end to find the yellow keycard. Backtrack to the previous room with the acid pit. When you enter the room, you will see a wall that is brown instead of green like the rest of the room. Drop down here and interact with it for a secret. In here you can grab armor and some Rocket Launcher ammo (along with the Rocket Launcher). Follow the path to a wall. Interact with it and you will end up back in the first main room.

Take the only doorway you have not taken yet (the one on the left, directly across from the spawn). When you enter this room, take a left and go through the yellow keycard door. When you enter and drop down, take either the left or right path down some stairs. When you get to the bottom you will come to an open room with another pit of acid. Across this pit is a switch. Go over and hit it. Go directly across the pit again and interact with the wall here. You will find a hazmat suit in here. Then look to your left in here and interact with that wall to find the Chainsaw.

Leave this secret compartment and take the left staircase. Near the top will be a platform that dropped down (you may recall enemies being up here before). Walk onto this platform and ride it up. When it gets to the top look right and interact with the wall. The wall will raise. Walk forward and do this again. You will be in a new room.

Take a left in this room and walk on the red star on the floor. This will teleport you back to the beginning. Take the left door again but this time go in the acid pit and take a right through a new opening. In here is a Pinky (enemy 4/10). Follow this path all the way to the end. You will be in a room with a blue floor. In the back right is a button, press it. The wall will rise. Follow this new hallway to the end. There will be a switch and the blue keycard. Flip it. A staircase going down will have opened up, so follow it. At the bottom, look right and there will be a blue keycard door. Go through here, then hug the right wall until you reach the exit door.


E1M6: Central Processing

Save!

Go forward and hang a right. When you enter this room, in the very back will be the red keycard. Return to where you came into this room but the walls will be closed off. So stand here and kill the enemies until the door opens.

Now, run straight to the other side and take the red keycard door on the left. Now follow the path until you see a large opening on your left. In here is the blue keycard on a ledge. Take it, then backtrack to the four-way intersection near the spawn.

Take a left here through the only path you have not taken. In this room go right through a door. You will come to an area outside with a narrow path and an acid pool. There is an imp up on a platform above you on the right. We need this platform to lower. So approach the blue keycard door (but do not go through it). When you get close that platform should lower to reveal a room. Kill the enemies that came out and go into it. There is a radiation shielding suit. Interact with the wall behind it after grabbing it and the wall will open. In here is a different blue keycard door, along with a Backpack Full of Ammo. Open this door to get the yellow keycard.

Backtrack to the room before this (with the blue floor), go right, then go straight to the yellow keycard door. Follow this path up some stairs and down a hallway. You will see another yellow keycard door on your right and another staircase going down on your left. Take the stairs going down. Enter either opening on the other side of the room and follow the path to a switch, which you should interact with.

Go back to the base of the stairs, and on the right side of the room (if you are facing the stairs you used to enter this room) is a now-open door. Go through here and go down the steps on the right side. When you enter this room look to the wall behind you. There will be a button. Press it. Turn around and some walls should open up with more enemies. Go through the new opening on the right side of the room, and coming out of here should be a Spectre (enemy 5/10)

E1M7: Computer Station

Save!

Right out of the start, take a left and head into the room into the distance with flashing light (just hug the left wall). Kill the imp on the ground floor here and the lift will drop down. Stand on it and wait for it to go back up. Kill the enemies here and follow the path to get the yellow keycard. Drop down and hug the left wall again, and go through the yellow keycard door.

Through here, go straight, turn the corner and keep going straight. You eventually come to a set of stairs. At the top, a pillar will drop down. Continue past it and follow the hallway to the right of the door. Hug the left wall while going through here. Go through the door at the end of this hall, then use the lift in the back left of the room. Follow this path to get the red keycard.

Backtrack to the room with the pillar. Run past it to get it to come down again. When it lowers, walk onto it and face the closed door that you ran past before. You will see a radiation shield suit. When the platform is partly raised above the railing, run off the platform to land in the acid. Go grab the suit. In this same spot, near you, is a red button. Press it. The wall will open up and you can run up the stairs to find a switch. Use it.

If you did not get 200% armor and health before here is another opportunity. Go back down the stairs and hang a right. You will see a brown fat pillar in the acid. On the right side of the pillar is some armor. Then go towards the window on the other side of the room and follow the path along the left of this window. Grab the Supercharge here, look right and interact with the wall to open it up.

Go left here to find get to the red keycard door. Open this door and run to the end to get the blue keycard. Go right down to the end of the hallway. Go through the yellow keycard door, and hang a right until you see the blue keycard door on the left.

Go through the blue keycard door, climb the stairs, and go straight down this hall. Follow the path to the end and interact with the green button. Return to beginning of this room (at the top of the stairs after the blue keycard door). The door on the other side of the room should now be open. Go through this door, and the hallway will take you to the exit door.

E1M8: Phobos Anomaly

Save!

Start by pressing the red button in front of you. Shoot the barrels below to kill all the Pinky's below. In this room take a left and go through the door. In this room, there is a Chaingun and ammo to your right and a Shotgun and shells to your left. Fill up on ammo then go to the end of the hall and click the green button. The wall will lower. Hop on and wait for it to raise you up.

Time for two Baron of Hells (enemy 6/10). Take out your Rocket Launcher or Chaingun and unload on them. Also, just note the red floor in this is not lethal so feel free to run around on it to avoid the Barons' attacks.

When they are dead, the walls around you will drop. Go straight from where you took the platform up. There will be a U-shaped structure with a switch. Interact with the switch and let the stairs rise. Take the stairs up and walk on the Baron platform at the top. You will teleport to a dark room full of enemies. Whether you kill them all or die doesn't matter, this will end the episode.

You should pop:

Knee-Deep in the Dead in DOOM (1993)
Beat all the levels in "Knee-Deep in the Dead"
  • Unlocked by 998 tracked gamers (67% - TA Ratio = 1.22) 1,492


The Shores of Hell

Just a note for this episode, make sure you have pistol ammo going into E2M8. This is the only place a Cyberdemon pops up and you will need pistol ammo for an achievement during this fight.

E2M1: Deimos Anomaly

Go forward and hang a right. Follow this to the end to get the blue skull key. Backtrack to the spawn, then use the teleporter in the corner.

Follow this path until you reach a teleport. On the wall near this teleporter is a switch. Flip this switch and a button will come out of the ground. Press this button, then go through the teleporter.

In this room are two skull switches in a divet in the wall on the left, one switch facing the into the room, the other on the left wall in the divet. Press the one facing into the room. The wall to your right will drop, go through here and go around to the left to find the blue keycard door and go through the teleporter in here.

Walk into the room and turn around. You will see a path to the left. There will be a Lost Soul (enemy 7/10). Kill it. Further into the room is a red button on the right wall (relative to the direction you came in). Press it then go down the hall where you found the Lost Soul and climb the new stairs to press the other red button. Turn around and go through the teleporter straight from the staircase. Continue forward for the exit door.

E2M2: Containment Area

Save!

Go forward, turn the left corner and then the right corner by the berserk powerup. Take this into the green hallway. At the intersection here, take a right. Go all the way to the end, grab the radiation shielding suit and follow the hallway with the acid ground to the end. Above you, you will see a window. Face the window and look slightly to the right so you are facing the way you came. Save here just in case in case you make a mistake, you only get one shot at this. Go back and forth against the wall with window above and mash cn_A. A platform next to you will begin to rise. Walk onto it before it gets too high. Wait for it to rise to the top, where you will find the exit door.

E2M3: Refinery

Save!

Go forward and take a left at the barred windows. Then go forward. Follow the hall straight through the acid room into the room with the Shotgun. Take a right and go straight into the lava river. Go up the stairs that are on your right to get the Plasma Gun. Drop down here and grab the blue skull key.

Leave this room through the only door, take a right, go to the end of the hall then make a left back through the Shotgun room and into the room with the small acid pit. On the other side of the acid pit is a section of wall barred off by two metal bars. Interact with this section of the wall and it will rise. In here, go straight and follow the path to the blue keycard door. Follow the linear path until you reach a dark room. In this dark room hug the right wall until you reach an exit. In this new room cross the acid pool and then follow the hall to the exit door.

E2M4: Deimos Lab

Save!

Go forward to the teleporter in front of you. Go forward then hang a left through a series of platforms separated by acid. Continue following this until the end. when you will enter a series of blue hallways. Follow this until you have to make a right, then you will come to an intersection. Go straight and you will find 3 imps running around. Open the door, and kill these three along with the Pinky on the other side of the door quickly. Kill them fast enough and you will pop:

Cookin' With Plasma in DOOM (1993)
Kill 5 enemies in 5 seconds with the plasma rifle
  • Unlocked by 663 tracked gamers (44% - TA Ratio = 1.49) 1,492

Go through the door that the Pinky came from.

In this room press the red button to lower a platform. Get on the platform and wait until it rises again. Grab the blue skull key that is up here. Drop down and go back through the door you came in. At the intersection take a left and go through the blue skull key door. You will enter a red hallway. You will reach a yellow keycard door. Look to the left and you will see the yellow skull key. Run straight through this platform to the other side of it while picking it up in the process. Don't linger as the block above the keycard will start to fall and deal a massive amount of damage. Then go through the yellow keycard door.

Go left through this curved hallway. Pass the hallway on the left and you will find a gap in the floor against the wall. Walk into this gap to fall down and interact with the wall on the left to open up a secret. Pick up the Plasma Gun in here and then head through the teleporter.

Go down the only path that leads from this room. At the bottom of the stairs you go down will be a Cacodemon (enemy 8/10). Kill it. Then look to the small hallway from where you came from and go through the teleporter. Take a right down this hall. You will come to a pit with lava. Over this pit, look to your left. You will see a small square platform. There is a skull switch here. When you trigger it run back into the lava pit and onto the platform that is now raising. This will take you to the exit door.

E2M5: Command Center

Save!

Secret Exit

Leave the spawn and take an immediate right. Follow the path to the stairs going up. At the top, go to the right to find a skull switch. Activate it and go through this hallway and staircase to the end. There will be another skull switch, activate this one also and go inside. If you were unable to get Cookin' With Plasma before, here is another opportunity.

Face the wall you came from (opposite of the open door), there are two skull switches. Activate the one on the left. In the new room, there is another switch on the right. Activate that one aswell. Leave the room and go over to the right, where there is a staircase. Go up to it and you will be teleported. Turn around and there will be a lion's head on the wall. Interact with this to open up the wall. Go through it onto the teleporter which will take you to an exit door, and put you in the secret level (2/4), E2M9.

Normal Exit

Leave the spawn and take an immediate right. Follow the path to the stairs going up. At the top, go straight to an outside area. Go to the other end of this area to find a skull switch. Activate this and go into the room. Go through the door on the right. If you go into this room and go around the corner to the left, on the left wall is another skull switch. Activate it and go through. Follow this path up a set of stairs and you run into yet another skull switch. Activate it, go through and take the left path.

When you get to the bottom of the stairs, there is a skull switch on the right. First, grab the radiation shielding suit, then interact with the switch. A door will open and go through and follow the stairs up. There will be another skull switch. Activate this, then activate the next one that is right in front of you. In this new hall, make a right and go down the hall. At a four-way intersection take the right path and follow it to the exit door.

E2M6: Halls of the Damned

Save!

This is probably one of the most, if not the most, confusing missions in the game. There is however a glitch that lets us skip almost the entirety of the mission, but it is finicky and difficult to pull off. It is at least worth it to try, and will tremendously help with the Nightmare run. However, as per before, I will describe both the glitch and the "normal" path to the end.

As for the glitch, the process is this: There is a corner you will run at, you will need to adjust the stick such that you glitch out of the level. You will know this happens when your gun begins to blur on your screen. When this happens you can go straight over to the exit room, and with the right positioning, you can press the exit button to end the level. To clear this up more, here is a video that explains it.

All credit for this video goes to Oxyde.

Glitch Method

Go forward, grab the Rocket Launcher. Open the door and use the skull switch in here. Backtrack to the spawn, then take a right into a new area. Go to the other end of the area. You will find a Berserker powerup on a ledge across an acid pit. Press the red button here to raise some stairs so you can get to it.

Grab it. A new door will open over on the left in the acid pit. Follow it to the end, you will find a switch. Trigger then run back to the big area, and take a left and go through to the locked exit door. Go through the other door here. Kill the enemies in this hallway, follow the hallway to the left and you will see the blue skull key. This will spawn a Pinky and release two imps. When they are dead, face where the blue keycard was. This corner on the right is the corner you need to glitch out of. So face the corner and aim at the right wall, but not straight at it, make sure you are ever so slightly looking to the left, towards the other wall. Go to the right and run back to the left into the corner. If done properly you will glitch out of the map. IF it doesn't happen immediately, fiddle with which way cn_LS is being pointed. If you can't get it, adjust your aim ever so slightly.

When you are out of the map, go over to the exit door. You will notice somewhat of a couple of pillars. Go to the right of these and you should be able to see the exit button. You will need to align yourself such that the button itself is just a red sliver, and you will need to aim slightly to the left of the button (so that you are aiming behind it essentially).

Remember, this glitch is finicky, even for those who have done it before. When I was writing this, I got both parts of the glitch done on the first try. When I went to record it, it took me 7 minutes. It's very precise, so I implore you to keep at it. For those that don't want to bother with this, or cannot get it, up next is the "normal" method.

Normal Method

This is a good opportunity for the achievement Guns Are For Wusses. Just killing the enemies with your fists until you hit 25. That will unlock:

Guns Are For Wusses in DOOM (1993)
Get 25 kills with your fists in a single level
  • Unlocked by 482 tracked gamers (32% - TA Ratio = 1.76) 1,492

Go forward, grab the Rocket Launcher. Open the door and use the skull switch in here. Backtrack to the spawn, then take a right into a new area. Go to the other end of the area. You will find a Berserker powerup on a ledge across an acid pit. Press the red button here to raise some stairs so you can get to it.

Grab it. A new door will open over on the left in the acid pit. Follow it to the end, you will find a switch. Trigger then run back to the big area, and take a left and go through to the locked exit door. Go through the other door here. Kill the enemies in this hallway, follow the hallway to the left and you will see the blue skull key. Across from that is a brown wall. Interact with this to get the Chainsaw.

Follow the hallway back and circle around to the left, there is a switch. Use it. Turn around go on the left path again. You will come to two openings that lead to an area with wooden walls. Take the left door. You will come to a three-way intersection. Take the middle path. Follow it straight and you will come to a door. Go through this door.

Once in here, make an immediate right. Then go straight and hug the left wall around a corner to find the red skull key. Backtrack and make a left when you get back to the white hallway. At the end are two doors. Take either door. Go down this next hallway and open the door at the end. In this door, there will be a green button. Press it and turn around. Follow the hall here upstairs. When you get to the end of the hall there will be 4 paths. Take the one immediately to your right. Go around either path in this room to the other side to get the yellow skull key. After this, leave the room from where you came, and take the path you came from.

You will need to backtrack all the way back to the main hallway. Take a left and just follow it back to the end where you will find the exit door.

E2M7: Spawning Vats

Save!

Just a note for this mission, remember to make sure you preserve some Pistol/Chaingun ammo. You will need it for the next mission for an achievement.

Right from the start take the door on the left. Follow the path straight, ignore the elevated door on the right and keep going. You will go left around a corner down some stairs. At the bottom, immediately take a right and go to the switch at the other end of the room. Press it, the panel will lower, and you can proceed. On the right side of the room will be the blue keycard.

Backtrack to the initial spawn. Now take the right path. You will see a blue key door. Open it. Grab the Chaingun on the right then take the left path. There will be two ways to go, stick to the left. Follow this path to the end to get the yellow keycard.

Once again backtrack to the blue key door. Make a left out of this door and follow the path. On this path is an invincibility pick-up. Feel free to grab it. At the end of the path, you will come to a room with the exit door. You could take the Rocket Launcher, strafe run backwards and shoot as you go off the ledge to propel yourself over to the exit door. If you want to try this method, feel free, but it is not worth the effort here. So go through the only other door here that you can open.

Go through the hall here, and make the first right. Then go through the yellow key door that is on the right at the end of this hall. At the other end of this room is a path. Take the path to find a switch. When the switch is activated, go back into the previous room and the red key card should spawn. Backtrack to where the exit door was. Just a note for this section, even on I'm too Young to Die, there a lot of imps around where you grabbed the red key card, so this is a good spot for both Groovy and Cookin' With Plasma.

When you get back to the room with the exit room, there is a red key door. Open it. In here is a button. Press it. This will reveal another button. Press this one too. A bridge will rise, letting you get to the exit room.

E2M8: Tower of Babel

Save!

Turn around and there is a pillar with a button on each side. Then go through each door and get whatever powerups there are. Be quick, as the door will close behind you.

When you go outside the Cyberdemon (enemy 7/8) will spawn. Unload about 200 rounds from your Plasma Rifle. This should get his health down far enough that a few shots from the pistol should take him out. Make saves as you deal damage to him, just in case you do too much. It is not necessary for this, it just makes it so you won't have to redo the entire fight if he dies by something other than the Pistol.

When the Cyberdemon is dead, that will be the end of the episode. That will unlock:

The Shores of Hell in DOOM (1993)
Beat all the levels in "The Shores of Hell"
  • Unlocked by 638 tracked gamers (43% - TA Ratio = 1.52) 1,492

If you finished it off with the Pistol you will have also unlocked:

Shoot It Until It Dies in DOOM (1993)
Finish off a Cyberdemon with the pistol
  • Unlocked by 441 tracked gamers (30% - TA Ratio = 1.83) 1,492

Inferno

E3M1: Hell Keep

Start by interacting with the closed eye that you spawn looking at. This will raise you to the surface. Run for the door ahead, and interact with the skull switch to the left of the door to open it. Once in here, hang a right and follow the linear path until you get to the exit door.

E3M2: Slough of Despair

Save!

Go straight and take the left-most path. Hug the left wall until you come to the blue skull key. Go back the way you came and when you pass over a bunch of ammo and health items, head to the left into what looks like a dead end. The wall will drop. In here is a blue key door. Open it and activate the switch. Turn around and go to the right to find a portal. Go through the portal to end the level.

E3M3: Pandemonium

Save!

Start by going straight and then up the stairs. Then take the steps in the back right of the room. Take a right at the top of the stairs and follow it to the end. Drop down, then go down the metal steps. At the bottom, grab the blue skull key.

Go back up the steps. At the top, there is a platform made of bone. To the left of this is a closed eye switch. Switch on the eye, ride the platform up, and drop down. After you drop down, go up the stairs on the other side. At the top, take the right path then drop down. When you hit the ground, turn around and take the right path down a short set of stairs and then take an immediate right, go down to the end of the hall, and make a left when you reach the door. Continue forward into this new outdoor area and go through the blue key door over on the right. This will take you to the exit door.

E3M4: House of Pain

Save!

Go straight and up the stairs. In this outdoor area, there are three switches on the other side. Interact with the one on the right. Then take the path on the right, cross the hallway and follow this other hallway. Go straight and hug the right wall. This will take you to the blue skull key. Go back the way you came and make an immediate right and go around the corner. There are some barrels and door in the distance, go to the door.

Go through this door, then through the next. In this next room, there is a door and in front of is a red portion of the floor. To the right of this is a blue panel. Step on this and the door will open. Head through. Follow this hallway until you get to two pillars with skull switches on each side of them. On the left pillar, activate the left switch. Once that is done take the left path and second door on the left will have the yellow skull key.

Go back to the two pillars and face them in the way you did when you first entered this hall. On the right pillar activate the front and left switches. Go down the right path this time and go into the second door on the right. Open the yellow key door. In here grab the red skull key. After this go into the other doorway that you passed on the right. In here is a red key door. Enter it and follow it to the end where you will have to drop off a ledge. When you drop off, take a right and there is a panel that is different than the rest of the room. Interact with it and it will open up. Follow it to the end for the exit door.

E3M5: Unholy Cathedral

Save!

Another one of the very confusing levels. Go straight and through the left door and go down the hall to the left. There will be two doors. Go through the one on the right and go through the teleporter. Turn left and go through the other teleporter over here. When you teleport, walk backwards to teleport again. Then take the door on the right. Follow it to the silver doors. Here, there is a red pillar with an opening in it. Walk through this and the silver door will open. On the other side of the room are two skull switches. Trigger the one on the right. Then go to the left into the back left of the room to grab the blue skull key.

Face the door you came from, and to the right of the door is a platform with a block going up and down. When it is raised, go onto the platform to teleport again. In this room go to the left door and follow it to the blue key door. As you enter, look to your left and you will find the exit door.

E3M6: Mt. Erebus

Save!

Secret Exit

Right from the beginning, look right and go forward. Pass a mossy building on it's right and you will see a pool of lava. At the end of this pool is an area where you can drop off. When you drop off, in the back of this area is a blue square with the secret exit in it. Go towards the right side of this square and aim towards the back of it (if you look at your map you should be facing roughly northwest. Mash cn_A as you go back and forth on the side. This should trigger the exit and take you to E3M9, the secret level (3/4).

Normal Exit

At the start go right, and hug the wall on the left. At the entrance of a big green building (not the mossy building, the one to the left of that) is the blue skull key. Enter this building and look at the left wall. On the floor is a candle. Interact with the wall behind it. Then step through the teleporter.

When you are outside you will see below you is a red square. Run into it. If you miss it, run around the back of the structure that you ran off of, and there will be a small divet in the building with 3 demon faces on the walls. Walk into this and you will teleport back into the building. When you drop down into the square, take the teleporter here. In this new area, turn around. Go down the hall, take the left path and deactivate the skull switch. Then backtrack to where you came from and exit through the open door. Take a right and hug the right wall. You will see a stone wall along with a brick structure in the lava. Follow this brick wall until you come to an opening in the wall. Follow this path to the exit door.

E3M7: Limbo

Save!

Go straight out of the start and make a left when you reach the lava pit and go through the doorway here. Just hug the left wall until you reach the blue skull key. Return to where you came from by hugging the right wall after you turn around.

Go across the lava and go to the other doorway (the door to the right relative to where you started). In this room, take the blue key door on the left. Jump off the right side of the platform here and take the stairs up to the other platform. At the back of the room is a hole to drop down into, do so. When you get here there will be a few radiation shielding suits, grab one or two and take the left path.

Go straight until you see another piece of land with more radiation shielding suits. Enter here and take the right path. Follow this path and hug the right wall. You will come to a teleporter, do NOT take it. Instead, take the left path just before the teleporter. At the end of this path is the red skull key. Interact with the lion head switch and then use the skull switch in there. Turn around, go straight and take the teleporter. Make a left and again hug the right wall to get back to the center area.

When you get there, take the door on the left, the only door in this central area you have not taken. In here there are two pillars. Behind both of these are doors. Take the door behind the right pillar. When you get here, there is a corner in the middle of the platform, close to the platform next to you with enemies on it. Straferun off this corner to get the yellow skull key. If you are having trouble with this trick you may take the left pillar's door to get a switch to bridge the gap, then take the right pillar's teleporter to get the key.

Teleport back and leave this room. In the center of the central room is a teleporter. Take it. Then strafe run across the gap (this one is a little easier to pull off). Go through the yellow key door and activate the switch in here. Return to where we got the yellow skull key (go through the door in front of you and take the right pillar's teleporter). Now go through the door on the left and hug the right wall. You will come to another pillar, similar to the other ones. Take the teleporter in here and go through the exit door.

E3M8: Dis

Save!

From the start go straight. You will enter a big open area. In the middle is a small building. Open it and grab the Plasma Gun. Use this to unload on the Spider Mastermind (enemy 10/10). When it is dead the episode will end. You will pop:

Inferno in DOOM (1993)
Inferno127 (75)
Beat all the levels in "Inferno"
  • Unlocked by 517 tracked gamers (35% - TA Ratio = 1.69) 1,492

That kill will also be your last enemy, which unlocks:

Headhunter in DOOM (1993)
Headhunter129 (75)
Kill one of every enemy (Secret)
  • Unlocked by 506 tracked gamers (34% - TA Ratio = 1.71) 1,492

If your collective time for all the missions is under 2 hours, you will also unlock:

I'm the Man! in DOOM (1993)
I'm the Man!175 (50)
Beat DOOM in under 2 hours
  • Unlocked by 122 tracked gamers (8% - TA Ratio = 3.49) 1,492

Thy Flesh Consumed

E4M1: Hell Beneath

Go straight and take a left. Follow this path to a demon switch. Use it then go back and take the right you did not before. A new opening will be there. Go through there. In this new room and go right. When you go around the first corner you will see a ledge to drop down and a doorway. Go through here and go to the end. In this last room is the red skull key.

Go back where you came from, and on your right is a platform before the exit. Interact with it to make it drop down. Get on it and let it rise you back up, then run off the ledge back to where you came from. Now that you are back in the main room, go through the red key door. In this room is what looks like a wall, but you can actually run to the right or left of it and get behind it. Behind it is the blue skull key.

Return the to the doorway on the opposite side, and follow the path to the right as before, but this time continue until you reach the blue key door. Go through here for the exit portal.

E4M2: Perfect Hatred

Save!

Start by running up the steps on the left and across the gap. When you reach the other side look right and activate the lion switch here. A wall behind you will open up. Run across the gap to that opening and then drop down to the lava. Turn around and you will see another lion's switch. When you press it, run across the lava and get on the now-rising platform. When it rises, run across the gap to the other platform. A wall will open and a Baron of Hell will come out. The yellow skull key will be in here. Take it. Backtrack around the room and run over the gap from which you initially entered this room. From here jump down to the right and go through the doorway in the back-right. Now, go up the staircase and at the top, go up the stairs on the right and run across this gap. Activate the yellow key lion switch.

A wall will rise to your right. Run across the gap to that platform and then go into the cave that is on the right from here. Drop down here and hug the left wall until you reach a staircase. Go up the stairs. At the top, through an entryway on the left is a Baron of Hell and the blue skull key. Go through the teleporter. Now climb the left staircase again, but this time, go straight to the blue key pillar.

Climb up the stairs and when you reach the top, turn around and go back down them. To the left of the bottom of the stairs is a new small staircase, and a teleporter. Go through it. You will spawn on top of the Cyberdemon. The Cyberdemon will die and here, you can pick up the BFG. At this point, there should be two Cacodemons flying around. Make it so you only have one of them in your view, and kill it with the BFG. This will pop:

Overkill in DOOM (1993)
Overkill32 (20)
Kill only a single enemy with a shot from the BFG
  • Unlocked by 566 tracked gamers (38% - TA Ratio = 1.62) 1,492

It does not necessarily need to be these enemies, it just has to be one singular enemy killed with a shot of the BFG. It can be any type of enemy. Make a save here.

Secret Exit

Go back down the stairs and onto the teleporter again. Take a right and jump off the platform into the lava. There will now be an open door. Go through here into the exit. This will give you access to E4M9, the last secret level (4/4). It will also pop:

Not a Very Good Secret in DOOM (1993)
Find all the secret levels (Secret)
  • Unlocked by 214 tracked gamers (14% - TA Ratio = 2.63) 1,492

Normal Exit

Reload your save. Go straight and then take a left through the door here. At the end of the hall is the normal exit.

E4M3: Sever the Wicked

Save!

Run straight off onto the ground and go down the stairs in front of you. Take a left at the bottom and go up the stairs. Follow the hall here through a door and drop down into the pit and go straight into another room. When you enter this room, turn around and interact with the lion switch. A platform will lower, on this platform, grab the red skull key.

Enter the room where the switch was and take a left. You will find a room with the Rocket Launcher in it. Go straight into the wall and interact with it for a secret hallway. Follow this to the end and take the teleporter back to the spawn. Look right and go through this path, opening the red key gate. In the middle of this area is a support beam. On the other side of this beam is the blue skull key. Continue straight off this area to a lower area. Take a right and jump down into the lava and go through the red key door.

In this room go up the stairs you find and follow it to the blue key door. Follow this room to the exit teleporter.

E4M4: Unruly Evil

Save!

Go straight out of the spawn, activate the lift in front of you and ride it up. Go to the right and follow the path around the perimeter of this area. There will be a lift you can activate to lower. Ride this back up. Go through the door and hang a left. You will see a room with the red skull key. Once you have that, turn around and go left around the corner to the red key door. In here, look to your right, and activate the demon face switch. The lift near the exit will lower. Ride it up and take the teleporter over on the left side of this platform. In here, look to your left and activate the demon switch in here. Now drop down, activate the first demon switch again to ride the elevator platform. This time take the teleporter on the right. Look to your right and activate this switch. Once again drop down and activate the switch here to ride the elevator up. Now you may go through the exit gate into the hole in the ground to end the level.

E4M5: They Will Repent

Save!

Go around to the left at the beginning and go down the stairs to the door. Go through it and hang a right and hug the right wall until you get to a door, which you should go through. At the other end of the room is an elevated platform elevator. Approach it and it will drop down. Hop on it and ride it up. Over on the right, in the corner, is the red skull key. Grab it.

Drop off this upper lever and go to the back right of the room, where the red key door is. Go through here and follow the hallway until you go down an elevator and into a big room with a lava pit in the middle. Jump down into the lava and make a left, to grab a radiation shielding suit. From here go up the stairs, and follow the path until you see another way to jump down on the left. Jump down here. Follow this and bear right. You will come to a room with a window. Run out of this window to drop down on the exit button.

E4M6: Against Thee Wickedly

Save!

Go straight out of the spawn and hug the right wall until you come to a new area. In the new area drop down into the lava river in front of you. Follow this to the left. Grab the radiation shielding suit on the left, and jump off the ledge here. The key to this level is the teleporter you may have noticed when jumping down here. It is on a very tall brown poll. Depending on which side you take the hidden lift up and into the teleporter will determine where you end up. So there are four different places this teleporter can take you. Interact with the poll while facing to the east (the way you were just running when you jumped off the ledge.

You will teleport to an area above an imp and a Shotgun Guy. Kill them and jump over to them. Go forward to where they were, then follow the path to the blue skull key. Jump back into the lava where you were and take the same side of the pillar up through the teleporter (the west portal). You will be back in the same place. Turn around and you will see a platform relatively close to you. Straferun off the platform you are on to this other platform. Follow the path to the red skull key. Backtrack and a new bridge will rise to your right. Follow this over and then another bridge next to it. Turn right and activate the blue key lion switch.

Turn around and look to your right and you will see the yellow skull key. Go up to the platform it is on. This will open the door that was opposite of the blue key lion switch. Go in here for a Rocket Launcher and on the left wall is a switch, use it. Then go back out and get the yellow skull key. Backtrack across the bridge, but don't cross the second one.

In this room on the right is a teleporter. Take it. Go straight and at the end is a big rock structure. On the left side (the side you would be facing if you were facing the building) is a red key door. Open this and hit the lion head switching inside. Leave this room and hang a left around the corner and go onto the teleporter pad. Follow this pad for another teleporter and a BFG. Here a Cyberdemon will spawn. I recommend a save here, it can kill you very fast, even on I'm too Young to Die. Turn the corner to find him and there will be an invincibility powerup here. Grab that and kill it with the BFG or the Plasma Rifle. When it is dead, interact with the gate that it was guarding and go over to the exit switch in the back left of this small area.

E4M7: And Hell Followed

Save!

Go straight down the hall and make the first left and follow this around to the left. Go through the door at the end of the hall. In here turn right, and in the far left of the room is the red skull key. It appears to be up above you out of reach but walking into the wall underneath it will give it to you.

Go back through the door you came in here from and then make the first right and the first left. Continue down to the door and go through it. You will now be outside with a lot of enemies. Go straight and fall into the pit here. Go to the left, grab the radiation shielding suit and continue this way. Open the red key bars here and then take the elevator up. At the top, interact with the skull switch. Another switch will pop up, interact with it (it won't change from red to green, just ignore this). Go out the window. There will now be a platform raising the bridge the gap between your side and the middle. Go to the middle platform and wait for a switch to come out of the ground. Interact with it when it does to end the level.

E4M8: Unto the Cruel

Save!

Go straight at the spawn until you come to a big circular area. Take the left path, interact with the demon wall and take the teleporter behind it. Go up the stairs in front of you, and take a left to get to the blue armor pick-up. Follow this path into a building. There will be a skull switch on the wall, press it and drop down. Follow this path straight to the end to get the yellow skull key and interact with the middle wooden panel to reveal a teleporter. Go through it.

Go forward and fall off the platform that you are on. Go to the right and hug the wall on your right until you reach another teleporter. Go through it. You will be back in the circular room. This time go right and interact with that demon door, which will reveal the red skull key. Go back to the middle and on either side of this central pillar are yellow key and red key walls. Activate them to reveal skull switches. When you hit both a platform will rise to bridge the gap to the other side of the room. Take this door to the boss. When the Spider Mastermind is dead, the structure in the middle will disappear and you can take the hole in the floor to the exit for the end of the game.

You will unlock:

Thy Flesh Consumed in DOOM (1993)
Beat all the levels in "Thy Flesh Consumed"
  • Unlocked by 399 tracked gamers (27% - TA Ratio = 1.93) 1,492

Cooperative

There is one cooperative achievement in this game and it is for completing the game on Nightmare. Thankfully only the first three episodes are needed to pop the achievement, so Thy Flesh Consumed does not need to be completed. Likewise, the bonus missions E1M9, E2M9, and E3M9 do not have to be completed or accessed.

The cooperative mode works in this game a little bit differently than the singleplayer mode. Up to four players can play at once. Only one player has to make it to the exit. When one player triggers the exit, the mission will end. When a player dies, they can respawn by pressing cn_RT. They will appear at the beginning of the mission with all weapons gone except their pistol, with 50 bullets. No matter how many times any player dies, or how many die at once, the mission will continue. Just keep in mind that there is friendly fire, so be careful where and when you are shooting. Furthermore, any keys, items, or switches picked up or interacted with up will stay as such. Likewise, any enemies killed will remain killed. So as an example, if someone picks up the blue keycard, then all players in the game will be given the item to use and it cannot be taken away unless the level is restarted. There is, however, one caveat. On the Nightmare difficulty, whether in singleplayer or cooperative, enemies will respawn unlike on the lower difficulties. This makes this difficulty is very difficult, and conventional methods of just killing everything are no longer viable. So there are two methods here.

Method 1

Get as many friends as you can to play with you. If you can get a full game of four people then do so. Follow the instructions on the Story page through each mission. Just run past the enemies whenever you can get whatever keys are required to get to the next part of the level and continue on. You will die. A lot. Let us take the second mission as an example.

The first key you get is the red keycard. When you pick it up, make your way to the red key door. You may die on the way there. If you do, that is okay, since the keycard you collected does not get taken away. Just proceed to the red key door from the spawn. How to get to the end of the mission is described in the story page under E1M2.

If you attempt this method, you will need to be patient and persistent. There are a few levels where the amount of enemies is completely overwhelming, especially after you have entered a room and triggered the enemies for the first time. If the enemies get too clustered in a room, then take the time to kill them. There is no sense in trying to run through a room without shooting if there are too many enemies blocking the path. They may respawn, but they will at least be temporarily dead and the area they were crowding will have some more breathing room. Also, the enemies can travel between rooms when you or your partners open doors, so some of these enemies may spawn in other areas, which will keep the path more clear for movement.

One more note for this method, some doors when you enter them will shut behind you and not open back up for a certain amount of time. This, unfortunately, has a negative effect on cooperative mode. If someone goes into a room and one of these doors closes, none of the others will be able to open the door again, they will just need to stay and wait for the timer on the door to expire.

So here are some tips, some of which was mentioned above but I will state it again to be safe.

  • Know the missions and know them well, or at the very least follow the walkthrough for the levels as you go through each level.
    • You do not necessarily need to do this, but you could also practice each mission on a lower difficulty so everyone you are playing with knows where to go and when. This will increase the amount of time to beat the game, obviously, and it is not altogether needed. This comes down to preference.
  • Move together with your partners through the room. The more of you in the same room, the more diluted the enemy attention will be, which will give you a better chance of getting to the next area.
  • Focus on the next item or switch that needs to be triggered to get to the end of the level.
    • All keys picked up or switches interacted with will stay collected or interacted with will stay as such regardless of death.
  • If a room or hallway that you need to get through is too crowded, clear out the hallway. There are a very large number of enemies on some of these missions so this is likely to be necessary. This may take a few lives, but it will at least temporarily open up the hallway.
  • You may play alone with one controller idling if you do not have a partner to help, but this is difficult. The more players, the easier it is. Plus the achievement is not host-only so up to four people can get the achievement in one go.
  • Be patient. It is not easy, and certain missions will yield quite a bit of dying.
  • The game itself makes no attempt to help you track which missions you have completed on this difficulty. The achievement tracker does work though. As long as you go in order, each mission is worth about 5%.
    • Each episode has 8 missions. So if you are at say 45%, that implies that you have done 11 episodes, so you left off at episode 2 mission 4.

Method 2

Learn to speedrun the game. Videos of a speedrun for each episode will be posted below. This method will take a lot of practice. This method is for either people who are very good at DOOM, first-person shooters and/or speedrunning in general. This method will take a lot of practice. The method could also be useful for those that do not have another partner to play with and are trying to get the achievement alone. Either way, this is by far the hardest of the two methods, but the option is being provided just in case.

Here are some notes on the videos below. The videos use speedrunning techniques to skips parts of levels. Some of these tactics are detailed in the walkthrough. Furthermore, the person doing the speedruns here access more secrets and places in the missions that are not necessarily required for the completion of the level but makes it easier to survive. You may choose to follow all of their strategies or not. Furthermore, to actually survive some of these missions, a no-death run for the episodes individually is required, since the stronger weapons are needed to pull off some of the methods and clear some of the rooms needed.

Credit for the videos goes to The Tofu.

When you complete all the episodes you will pop:

Not So Bad in DOOM (1993)
Not So Bad463 (75)
Beat every level on Nightmare in co-operative mode
  • Unlocked by 39 tracked gamers (3% - TA Ratio = 6.17) 1,492

Deathmatch

The two easiest achievements in the game, albeit boring. You will just need 100 kills. If you have some friends to run at you for kills, it will go more quickly. If not, two controllers and yourself is plenty.

Go to multiplayer and select Deathmatch. Pick the map E1M1 and set it to 25 kills. Have your account go outside using the secret exit (described in the walkthrough). Pick up the Rocket Launcher, all the ammo and go through the tunnel. At the end of the tunnel go left through the room into the room with the big window on the left. Stand here and aim into one of the corners of the room (but make sure you can see out of the window as well). Start running your dummies to the corner that you are aiming at and kill the dummy with your main account. If you are doing this on your own with a second controller, it will go a little faster if you kill the dummy when it spawns outside because it takes longer to run from the outside to the inside.

The other option is if you have multiple people locally that need the achievement, and you want to have some fun, play actual deathmatches and kill each other until everyone has 100 kills.

At the end of the first game will unlock:

Rookie in DOOM (1993)
Rookie37 (20)
Get 25 kills in deathmatch
  • Unlocked by 445 tracked gamers (30% - TA Ratio = 1.84) 1,492

Repeat this three more times and you will unlock:

Showstopper in DOOM (1993)
Showstopper105 (50)
Get 100 kills in deathmatch
  • Unlocked by 343 tracked gamers (23% - TA Ratio = 2.10) 1,492

Congratulations on completing DOOM (1993)!

Find anything you think is wrong with this walkthrough? Help us fix it by posting in its Walkthrough Thread.
This walkthrough is the property of TrueAchievements.com. This walkthrough and any content included may not be reproduced without written permission. TrueAchievements.com and its users have no affiliation with any of this game's creators or copyright holders and any trademarks used herein belong to their respective owners.