Dead Space Walkthrough

3. Story walkthrough

External image

Set your game to easy; we are going to try and squeeze as many achievements out of our first playthrough as possible; we don't want to be worrying about anything other than completing the objective when we do our Impossible playthrough.

Firstly I want to list the cumulative achievements that can be worked on from the the start of the game:

Cumulative Achievements

Dismemberments

Dismembering limbs will be one of your most common actions throughout the game. This is not a normal shooter where aiming for the head is advised, in fact 'never' shoot anything in the head, it does the least amount of damage for every enemy. Instead you are to aim for 'limbs', this doesn't always mean arms and legs however, during later encounters you will find many enemies with differing extremities to relieve them of. You are working towards no less than '1,000' dismemberments, don't worry however there are two important things to bear in mind that'll make this a whole lot easier:

Firstly; all of your dismemberments will carry on to your next playthrough.

Secondly; you can dismember all the limbs from any dead body you find, whether you killed it or not. Press cn_RB to stomp the limbs off bodies while they are on the ground.

Dismembering '20' limbs will unlock:

Dismembering '500' limbs will unlock:

Dismembering '1,000' limbs will unlock:

Stasis

There is an achievement for hitting '50' enemies with your Stasis, due to the cheat code we have, this should be very easy (cn_Xcn_Ycn_Ycn_Xcn_Y). If you are playing without codes; there is a good place to grind this at the beginning of Chapter 5, see below.

Using Stasis on '50' enemies will unlock:

Freeze in Dead Space
Freeze19 (15)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Use Stasis on 50 enemies

Melee Kills

Also in this playthrough, you want to kill '30' enemies using melee attacks. The easiest way to do this is to sever a Necromorph's leg then carefully use cn_RB to stomp it to death. Killing '50' enemies with melee attacks will unlock:

Brawler in Dead Space
Brawler15 (10)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Kill at least 30 enemies with a melee attack

Weapon Kills

You have to get at least '30' kills with each weapon in the game: the Plasma Cutter, Pulse Rifle, Ripper, Force Gun, Line Gun, Flamethrower, and Contact Beam. Don't worry about the Plasma Cutter achievement here, you should try to kill with pure melee at first, then buy the 'Pulse Rifle' as soon as you can in chapter 1. Also don't sell the weapons once you are finished with them because you need to have them all at once to get the full arsenal achievement.

Killing at least '30' enemies with the 'Pulse Rifle' will unlock:

Autofire in Dead Space
Autofire12 (10)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Kill 30 enemies with the Pulse Rifle

Killing at least '30' enemies with the 'Ripper' will unlock:

A Cut Above in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Kill 30 enemies with the Ripper

Killing at least '30' enemies with the 'Force Gun' will unlock:

Pusher in Dead Space
Pusher15 (10)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Kill 30 enemies with the Force Gun

Killing at least '30' enemies with the 'Line Gun' will unlock:

Eviscerator in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Kill 30 enemies with the Line Gun

Killing at least '30' enemies with the 'Flamethrower' will unlock:

Live With The Hot Ones in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Kill 30 enemies with the Flamethrower

Killing at least '30' enemies with the 'Contact Beam' will unlock:

Full Contact in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Kill 30 enemies with the Contact Beam

Owning all weapons in the game at once will unlock:

Full Arsenal in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Own every Weapon in the game

Pack Rat

Store '25' items in the safe - As soon as you have at least 25 items, go to a store. You have to select 'move' on each item and store them into the safe. Storing 25 items in a safe at at once will unlock:

Pack Rat in Dead Space
Pack Rat13 (10)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Store 25 Items in the Safe

Legend Teller

There are '168' Audio Logs to collect throughout the campaign. These are quite easy to find, and you only have to find '150' of them for the 'Legend Teller' achievement. If you are good at hunting down collectibles, or you just generally take a little extra time to check the corners etc you will have no problems with this. Otherwise here is a video guide (courtesy of Roosterteeth) showing the locations of all 168:

http://ah.roosterteeth.com/games/deadspace/

Collecting at least '75' Logs will unlock:

Collecting at least '150' Logs will unlock:

Merchant

There are also '14' weapon schematics and some medical schematics that can be found throughout the campaign. Again, you do not need to collect them all, in this case you only require '8' for the 'Merchant' achievement. I have mentioned the locations of all the weapons schematics throughout the chapter walkthrough.

Now let's get to the individual chapters.

Chapter 1 - New Arrivals

Here are a list of the objectives in this chapter:

Repair the Tram System:

  • Follow the Security Team
  • Open the Hangar door
  • Activate the Security Console
  • Get to Safety
  • Replace the Damaged Tram
  • Find the Data Board
  • Find the Maintenance Bay Key
  • Install the Data Board
  • Call the Tram
  • Return to the Kellion and Run Diagnostics
  • Get to the Medical Deck

Completing this chapter will unlock:

Dead On Arrival in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Complete Chapter 1 on any difficulty setting

Chapter 2 - Intensive Care

Here are a list of the objectives in this chapter:

Retrieve the Captain's RIG:

  • Find the Thermite
  • Find the Shock Pad
  • Destroy the Barricades
  • Kill the Captain
  • Go to Engineering

At the start of this chapter you will receive a kinesis upgrade that allows you to throw objects. You will find many random objects lying around the Ishimura, such as dead bodies, trash cans and boxes etc. To throw an object hold cn_LT then press cn_B while looking at the object, then press cn_RT to throw it. You can throw the same object repeatedly, and throwing 50 will unlock:

Armstrong in Dead Space
Armstrong12 (10)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Shoot 50 objects using Kinesis

You can find the Flamethrower schematic on the floor near a body bag, just before the Security Station - (1/8)

You will encounter a new enemy here called a Lurker:

External image

Lurkers tend to keep their distance and shoot at you, but you need to intentionally get closer and allow them to grab onto you, then you quickly press cn_A to fight them off and you'll do an automatic kick and kill it. Try to do this with every Lurker you encounter, but note that; they will never grab you in zero-gravity. Kicking '10' Lurkers will unlock:

Secret Achievement in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Continue playing to unlock this secret achievement. (Secret)

Find the Pulse Rounds schematic under some shelves in a room with a power node and a dead scientist on the floor - (2/8)

Once you get to the first zero-gravity area, you can start jumping; aim your weapon at a flat surface and press cn_Y, if you hear a buzzing sound you can't jump there. Successfully completing '100' jumps will unlock:

Air Alert in Dead Space
Air Alert12 (10)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Zero-G Jump over 100 times

After you turn the lights back on; go through the ER Hallway A door and down a corridor to find the Line Racks schematic behind a power node locked door - (3/8)

Completing this chapter will unlock:

Lab Rat in Dead Space
Lab Rat21 (20)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Complete Chapter 2 on any difficulty setting

Chapter 3 - Course Correction

Here is a list of the objectives in this chapter:

Refuel and start the Engine/Activate the centrifuge:

  • Re Fuel the Engine (0/2)
  • Activate the Centrifuge
  • Manually Ignite the Engine
  • Go to the Bridge

After going down some stairs and encountering a Necromorph playing dead, find the Flame Fuel schematic, just to the right of the Temple Report 2 audio log - (4/8)

You'll come to a room with a save station and a kinesis control switch, find the Ripper schematic to the right - (5/8)

After returning from another zero gravity area you can find the medium med pack schematic on the left of a platform - (6/8)

After riding a lift down to level 1 and finding a room with a stasis recharge, turn around and open the power node locked door to find the Ripper Blades schematic - (7/8)

Completing this chapter will unlock:

All Systems Go in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Complete Chapter 3 on any difficulty setting

Chapter 4 - Obliteration Imminent

Here is a list of the objectives in this chapter:

Power and restart the ADS Cannon:

  • Meet Hammond on the Bridge
  • Activate the Elevators
  • Re Route ADS Power (0/3)
  • Destroy the Asteroids
  • Go to the Tram Station

Be careful as you exit the Captain's Nest and find the Level 3 suit schematic on the floor outside a pod, you'll be attacked by a 'Brute' - (8/8)

This should be your 8th schematic, unlocking:

I will continue to mention the rest of the weapon schematics for your pleasure.

Brute

The Brute will burst from the pod:

External image

Brutes are almost invulnerable from the front. The best way to kill them is to use stasis and go around to their backs, hammer the fleshy parts of their posterior until they fall. Killing your first Brute will unlock:

Secret Achievement in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Continue playing to unlock this secret achievement. (Secret)

After exiting the lift find the Contact Beam schematic outside of Storage Room A - (9/8)

You will come across an area with 'Gravity Panels', these are like tiles with blue streams flowing out of them. You must force '5' enemies into these panels killing them. Don't worry if you don't get 5 this time, because there are more gravity panels like this in chapter 9. This video (courtesy of 'SirCuddlesGHII') shows exactly how to do this, although he is very lucky here, you get the basic idea:

Successfully forcing '5' enemies into gravity panels will unlock:

Ragdoll Check in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Force an enemy into a Gravity Panel 5 times

Once you get into the room with the ADS cannon, DON'T SIT DOWN!! There is a save station right by the door you just entered, save there before you sit down, because if you finish this sequence with less than 50% shield strength you can just reload your save and try again. Here is a video (courtesy of 'SirCuddlesGHII' again) showing how to do this:

Successfully maintaining the shield at 50% or above will unlock:

Secret Achievement in Dead Space
1 gamer needs helpOffline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Missable - These achievements can be missed. Continue playing to unlock this secret achievement. (Secret)

Completing this chapter will unlock:

Cannon Fodder in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Complete Chapter 4 on any difficulty setting

Chapter 5 - Lethal Devotion

Here is a list of the objectives in this chapter:

Create poison to kill the Leviathan:

  • Find the chemicals
  • Find the DNA sample
  • Restore Life Support
  • Create the Poison
  • Go to Hydroponics

At the beginning of this chapter you should come across a 'Pregnant Necromorph', these will spill little necromorphs from the stomachs, you can use Stasis on them repeatedly and they will all count for the Freeze achievement. You can also use the free Stasis recharge on the wall:

Freeze in Dead Space
Freeze19 (15)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Use Stasis on 50 enemies

Find the Force Energy schematic in the Chemical Research Lab, the room with the specimen tanks - (10/8)

Completing this chapter will unlock:

True Believer in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Complete Chapter 5 on any difficulty setting

Chapter 6 - Environmental Hazard

Here is a list of the objectives in this chapter:

Purify the poisoned air/Kill the Leviathan:

  • Poison the Leviathan
  • Destroy the Poison Pods (0/8)
  • Recycle the Atmosphere
  • Kill the Leviathan
  • Go to the Mining Deck

You may have spent over 300,000 credits by now, or perhaps earlier than this, but this is the usual place that you do and it will unlock:

Big Spender in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Spend 300,000 credits at the store

After riding the elevator to the Grow Decks, find the Contact Energy schematic on the floor near some tomato signs - (11/8)

During the boss fight against the Leviathan, it will spit pods at you. Use the kinesis module to catch a pod then throw them back at it, this video (courtesy of Roosterteeth) will show you how:

Successfully throwing a pod back at the Leviathan will unlock:

Secret Achievement in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Missable - These achievements can be missed. Continue playing to unlock this secret achievement. (Secret)

Defeating the Leviathan will unlock:

Secret Achievement in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Continue playing to unlock this secret achievement. (Secret)

Completing this chapter will unlock:

Greenhouse Effect in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Complete Chapter 6 on any difficulty setting

Chapter 7 - Into the Void

Here is a list of the objectives in this chapter:

Launch an S.O.S. beacon:

  • Find the Mining Access Key
  • Find the S.O.S. Beacon
  • Plant the Beacon
  • Destroy the Gravity Tethers
  • Launch the Asteroid
  • Go to the Bridge

Find the Level 4 suit schematic in the same room as the SOS Beacon - (12/8)

Completing this chapter will unlock:

S.O.S. in Dead Space
S.O.S.24 (20)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Complete Chapter 7 on any difficulty setting

Chapter 8 - Search and Rescue

Here is a list of the objectives in this chapter:

Make contact with the USM Valor:

  • Contact the Military Ship
  • Fix the Array
  • Use the ADS Cannon to Clear the Blast Doors
  • Go to the Cargo Deck

Soon after the gondola ride you'll come to the Comm Array room, with a save station, stasis recharge and a large screen; find a Medium med pack schematic on the floor - (13/8)

Make sure to save before the ADS Cannon scene where you fight the 'Slug Boss'; you have to complete this with over '50%' shield strength remaining. This video (courtesy of 'SirCuddlesGHIII') shows you how to do this:

If you fail, just reload your save. Successfully maintaining your shield at 50% strength or more will unlock:

Secret Achievement in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Missable - These achievements can be missed. Continue playing to unlock this secret achievement. (Secret)

Also, killing the Slug Boss will unlock:

Secret Achievement in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Continue playing to unlock this secret achievement. (Secret)

Completing this chapter will unlock:

Strange Transmissions in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Complete Chapter 8 on any difficulty setting

Chapter 9 - Dead on Arrival

Here is a list of the objectives in this chapter:

Board the USM Valor and find its Singularity Core:

  • Clear the Radioactive Material (0/6)
  • Enter the Military Ship
  • Find the Singularity Core
  • Go to the Crew Deck

There are more gravity panels if you haven't killed 5 enemies with them.

You will also find a 'Shooting Gallery'; you must get a perfect score- beat all the levels by shooting the red silhouettes in order to unlock the 'Crackshot' achievement. This video (courtesy of 'SirCuddleGHII') will show you how to beat the gallery:

Getting a perfect score in the shooting gallery will unlock:

Crackshot in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Missable - These achievements can be missed. Achieve a perfect score in the Shooting Gallery

In the Infirmary, where the lethal lasers are, find the Large med pack schematic - (14/8)

Completing this chapter will unlock:

Wreckage in Dead Space
Wreckage24 (20)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Complete Chapter 9 on any difficulty setting

Chapter 10 - End of Days

Here is a list of the objectives in this chapter:

Repair the Shuttle:

  • Find the Crew Key
  • Find the Navigation Cards (0/3)
  • Repair the Shuttle
  • Override the Locks to Block B
  • Test Fire the Shuttle Engines
  • Release the Shuttle
  • Go to the Flight Deck

At the very start go through Sleep Block C to the locker room and find the Level 5 suit schematic - (15/8)

When you find the 'Zero-G basketball' court you have to make it through level 6 for an achievement. This video (courtesy of 'SirCuddlesGHII') shows how to do this:

Completing level 6 in Zero-G Basketball will unlock:

Z-Baller in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Missable - These achievements can be missed. Complete Level 6 in Zero-G Basketball

Completing this chapter will unlock:

Keeper of the Faith in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Complete Chapter 10 on any difficulty setting

Chapter 11 - Alternative Solutions

Here is a list of the objectives in this chapter:

Return the Marker to Aegis VII:

  • Transfer the Marker
  • Meet Kyne at the Hangar Bay
  • Position the Marker
  • Restore Gravity to the Hangar Bay
  • Meet Kyne at the Shuttle
  • Meet Nicole in Flight Control
  • Remote Pilot the Shuttle
  • Fly the Shuttle to the Colony

When you have the objective to 'Position the Marker' you'll go back to the tram station where you first crashed. Follow this video (courtesy of 'SirCuddlesGHII') shows you where the Peng Trophy is:

Finding the Peng Trophy will unlock:

Follow the instructions in this video (courtesy of 'Diego Knyte') to duplicate the Peng Trophy:

Use your credits to buy enough nodes to max out all of your weapons, unlocking:

Maxed Out in Dead Space
Maxed Out144 (75)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Upgrade all weapons and equipment

Completing this chapter will unlock:

Betrayed in Dead Space
Betrayed25 (20)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Complete Chapter 11 on any difficulty setting

Chapter 12 - Dead Space

Here is a list of the objectives in this chapter:

Return the Marker:

  • Bring the Loader to the Shuttle
  • Open the Supply Depot Door
  • Take Marker to the Pedestal Site
  • Restore Power to the Bridges
  • Return to the Shuttle

Killing the Hive Mind will unlock:

Secret Achievement in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Continue playing to unlock this secret achievement. (Secret)

Completing this chapter will unlock:

Exodus in Dead Space
Exodus25 (20)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Complete Chapter 12 on any difficulty setting

Completing the game on any difficulty will unlock:

Survivor in Dead Space
Survivor62 (50)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Main Storyline - These achievements are gained automatically by progressing through the main game mode. Complete the game on any difficulty setting

Impossible Playthrough

On this playthrough you will only be using the 'Plasma Cutter', sell all other ammo, and upgrade only use this weapon for now.

Killing at least '30' enemies with the 'Plasma Cutter' will unlock:

Tool Time in Dead Space
Tool Time10 (10)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Cumulative - These achievements are obtained by repeatedly performing the same action or set of actions over time. Kill 30 enemies with the Plasma Cutter

Continue using solely the Plasma Cutter for the rest of the campaign.

Chapter 11 - Alternative Solutions

Don't forget to find and duplicate the Peng Trophy in this chapter for extra credits.

Completing the final chapter on Impossible difficulty will unlock:

Epic Tier 3 Engineer in Dead Space
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Difficulty Specific - These achievements require that the game be played on a certain difficulty level. Complete the game on the hardest difficulty setting

Also if you only used the Plasma Cutter you will unlock:

One Gun in Dead Space
One Gun70 (40)
Offline Game Mode - These achievements require play in game modes that do not require a connection to any live services, such as Xbox Live.Single Player - These achievements can be obtained by a single player.Missable - These achievements can be missed. Beat the game using only the Plasma Cutter

Unless you decided that you don't want to duplicate the PENG trophy. You will need to start a "new game +" on the same difficulty that you were just on and it will carry over all of your stuff from your last playthrough. Simply keep playing until you have enough power nodes to max out all of your equipment.

Congratulations, you have unlocked every possible achievement in 'Dead Space'.

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