Chapter 3: Khan
Part 1: Dry
There's nothing to collect on this level, just 2 guns to pick up as part of the Weaponsmith achievement if you have the DLC.
So once this level loads up Bourbon will explain that while being safe from all those mutants is great... this isn't a particularly good place to be. Follow him along the vent shaft, he'll see a grate and while talking to you he'll climb out. Unfortunately he'll be spotted and a bunch of guards will come over and after mocking him a little, they'll lead him away. Nearly all of this is a scene in which you have no control over Artyom so just kick back and wait until you see the screen flash and the crosshairs appear as this means you're back in control.
Once you have control of Artyom, look to your side and pick up the automatic shotgun next to Bourbon's rucksack plus all the ammo on it, then turn around and walk back down the tunnel to pick up the AK rifle Bourbon promised you.
Now it's up to you how you tackle the next area, as you can probably stealth it but personally, I opted to go all guns blazing because your new AK is incredibly powerful and it's a great chance to work on a couple of achievements--namely the headshot achievement. There's not a great deal for me to walk you through, the area is swarming with enemies with powerful weapons so don't be reckless and charge them; instead hang back and try and take them out with headshots ducking back behind cover if you get hit a few too many times. Remember to get at least 1 kill with both of your new weapons.
There's plenty of ammo around on the enemies that you're killing. Due to the nature of this area and the enemies running around everywhere I'm not going to even attempt to explain placements or anything as there are way too many variables. Just keep slowly pushing up through the level at your own pace, being mindful of your surroundings.
Now as you enter through a metal grated fence area, clear the room but don't continue through the level just yet--there's a hidden flashpoint. It's in the middle of a secret crate maze, but rather than try to describe the route you should take follow this video to see someone running through it. Once you kill the sleeping enemy, loot him and then interact with the hookah (you'll suffer the same effects as you did from the earlier hookah).
Once you're done clearing out enemies, move up to the door at the end of the main tunnel (the one with the light above it). Enter through that doorway to see a scene in which... well, I know I said there are spoilers in this walkthrough but I won't say what happens but rest assured, you're in no danger.
After the cutscene you're introduced to a new character, Khan. He'll talk to you and eventually say that he's heading back and that he suggests you follow him unless you want to end up killed. He'll walk through the open doorway at the back of the room, but just before you follow him through it pick up the ammo from the table in the room. Now walk through the doorway and the screen will fade out and load up the next part of this chapter.
Part 2: Ghosts
There's an achievement related to this part and the next, it's easy to obtain so just stick very close to Khan and you should have no trouble getting it. For the achievement you need to not die in "Ghosts" and "Anomaly". If at any point, for any reason you do die just quickly dashboard the game and boot it back up to continue from your most recent checkpoint.
As the level starts up sprint through the corridor to catch up to Khan. You should reach him as he opens up a door and he'll talk about the area you're in. As you enter through the doorway Khan will walk up to some pipes and say that "they" know you guys are here. As soon as he says this crouch down next to the pipes and wait here for a moment. After a couple of moments you'll hear a scream and you'll have activated a flashpoint.
This part of the level is a little wierd, you seem to be dealing with ghosts and spirits more than anything else. You need to stick as close to Khan as possible and follow his commands. He'll lead you through the tunnel and provided you do as he says, you'll stay safe.
After a little while of walking through this strange tunnel Khan will tell you to freeze, and he'll go on to talk about "defenders" who were stationed here. When he mentions this stick close to him as he walks forward chanting some kind of prayer. As you reach safety and he stops chanting, he'll explain that he was there with them when they died, at which point another flashpoint should activate.
A little while after that you'll leave the tunnel and enter some rooms. One of the rooms has some barrels at the back of it. Run behind them and up to the body there to activate the final flashpoint in this part. Then quickly run after Khan, he'll be waiting for you in the next room. He'll run up a little bit more and stare at a door, telling you to concentrate. Walk up to the door and open it, a couple of mutants will pounce through but between yourself and Khan you shouldn't have any trouble taking them out. Khan will go on through the door, so follow him through the next room and as you jump down from a ledge you'll load up the next part of this chapter.
Part 3: Anomaly
Through this level we'll continue to stick close to Khan, doing as he says. Follow Khan through these new tunnels but not long into them he'll tell you to stop moving, carry on walking behind him until he tells you again and as soon as he does, stop moving. An Anomaly will appear in front of you, it'll come down toward you and after a couple of moments, disappear again. As you walk up a little further the flashpoint will activate for what you just did. A few more feet up the tunnel you'll hear a Nosalises growl. Stop moving as soon as you do and look to your right, you'll see one run down the tunnel and then an Anomaly chasing after it. Stay still until Khan starts talking; move up after him and you'll activate another flashpoint. Continue following Khan and a little ways up the tunnel you'll switch the other track by jumping over some boxes. Khan will go left but you need to go right, so quickly run down to the blockade and go up to the dead soldier on your right (up against the wall) to activate another flashpoint, now run back to Khan.
As you get to Khan you'll hear a loud growl. Turn around and prepare to fight a swarm of Nosalises. This is the only part of the level you need to worry about dying. Not that it's hard... but it's really the only part of the level where you need to fight to survive. Use you're AK to shoot down the mutants before they reach you and with Khan backing you up this section should be easy enough. Eventually the floor will fill with blue orbs, back up here and follow Khan into a corner while he explains to you that there's no need to interfere. After the short scene where you see the Nosalises get completely destroyed by the Anomaly's the achievement should unlock.
Complete levels "Ghosts" and "Anomaly" without dying.
Now follow Khan through the train cart but when he gets off and heads to the left, carry on forward a little and you'll come across some human bones which will activate the last checkpoint of this section. Now run back around to the left route (where Khan went) to find him waiting for you by a rail cart, and he'll tell you to hop on. While you travel on the rail cart Khan will talk about your destination a little, after a while the screen will fade out and you'll load up the next part of this chapter.
Part 4: Cursed
Once the level starts up follow Khan as he runs forward and he'll turn a corner and meet up with some people he knows. At this point you need to stay still and just listen to Khan's defensive plan. When he finishes talking to you about what you need to do the flashpoint will activate.
Now instead of going off to do what Khan told you, jump on the mounted machine gun and take out some mutants. You don't have much ammo for it (only 50 shots) so don't fire like a madman. The best thing to do here is pick a side tunnel and when a mutant appears from it, shoot at it and try and kill it with as few bullets as possible.
Kill 15 enemies using stationary machine gun.
If you don't manage to get the achievement now, don't worry about it too much. There are others parts of the game later where you can work on this achievement, for now be grateful that you've got a few of kills needed for it out of the way.
Once you're used up all the ammo in the mounted machine gun hop off it and lets get to work on those objectives. Now this can be a little tricky because the waves of enemies are infinite, so I'd suggest you stick to the AK (if you still have it, if not whatever weapon you're most comfortable with). From the mounted machine gun, looking toward the back of the tunnel (where the enemies are running from) enter the tunnel on the right (the one you didn't start on). Now run all the way to the end of the tunnel and pick up the bomb there, backtrack a little and head over to the opposite tunnel. Now run all the way to the end here and place the bomb on the wooden support beam. As soon as you've done that turn around and run back to the main tunnel as quickly as possible. If you enter the main tunnel at the first given chance, head down toward the mounted machine gun keeping an eye out on the left. When you see some stairs leading up, run up them and go across the room. There's a wooden support beam here for you to place the final bomb on. As soon as you've placed it run back down the stairs and toward the mounted machine gun. When the bomb goes off you'll unlock the next achievement;
Blow up the tunnel and airlock at "Cursed" station.
Khan should be running up toward you, he'll go on to say that he can't travel any further with you. He'll then lead you to a hidden entrance, when you enter the shrine be careful not to tread on any of the candles as doing so has a negative impact on the games moral point system. When he opens up the hidden entrance, head down into it and as you reach the bottom the next part of the chapter will load up.
Part 5: Armory
Metro Dweller Interactions
The level will start with you crawling through a vent, as you jump down onto the floor you'll take control of Artyom. First look to the side of the room and you should see some thick pipes and a valve sticking out of them--go over to the valve and turn it off. Now head through the vent system until you jump out at the end of it, then head left and walk up the tunnel. As you approach a wooden blockade a light will shine at you and you'll hear some voices asking who it is. Straight away another voice will say to let you in. The gates open up and so head on up through them. As you walk up through this new part of the tunnel you'll quickly end up on a platform, so run straight to the end of it and when there look to the right. On the floor next to some barrels are some bullets to pick up. Head back a little and then run over to the opposite platform. As you get close to the train cart go right down to the end of that platform and to the right on some boxes are some more bullets to pick up. Now head into the area between the 2 platforms and look for the open doorway--head through it to trigger the next part of the scene.
Now before I explain what to do in the chase scene, 2 things. There are a set of bullets to pick up in the scene so bear that in mind, they're easy enough to grab but if you get to the stairs that you run up and you haven't picked them up then you've missed them so pause the game and reload the last checkpoint and try again. There's also an achievement for not getting caught during the chase scene, again this is easy enough to do but if you happen to take a lot of damage and worry you're about to be killed or something do the same, pause the game and reload the last checkpoint.
Now during the chase scene just follow the guy running in front of you and he'll lead you to safety. At one point in the chase he'll say to duck down, do so but keep pushing forwards. As soon as you're clear from the crates on your left side stand up and carry on running. As you turn the next corner on your right, there are a stack of crates on your right... the last crate on this stack has the bullets on them. Carry on running through this section, you'll come to a bit where the guy you're following stops and points to the left, so run up the stairs and follow the walkway round. As you run around the walkway you'll be blocked in by guards on either side, at this point the achievement should unlock.
Complete level "Armory" without getting caught.
Luckily the walkway seems to break and you'll fall down to the floor and then some guy will hide you in his shack. As it turns out the guy that saved you is the friend Khan sent you to look for, he'll talk to you and explain the situation. Eventually he'll open the door and leave the shack, do the same but turn right and go forward a bit then look to your right and on top of the crate are the next set of bullets to pick up.
Now go back into the room you were just in and swap out one of your weapons for the Volt Driller that Andrew left for you. Leave the room and now head left and keep going this way until you get to the vendors. Sell the Volt Driller to one of the vendors and provided you've followed the walkthrough and been picking up absolutely all ammo you've come across you should have over 500 military grade bullets (if you don't, head back to the room and pick up the other gun in there then head back and sell that too). Now exit from the gun vendor and go and buy some sticky grenades from the vendor on the left until you're just below the 500 mark. Once you've done that head to the ammo exchange booth and sell some of your ammo so that you land exactly on 500 and in doing so you will unlock the next achievement;
Save 500 military grade rounds.
Now while at the ammo exchange sell all of your ammo types to get as much MG ammo as possible, then choose one type of ammo and buy as much as possible. Doing this should unlock the next achievement;
Exchange 500 Military Grade 5.45 rounds at Exchange kiosks.
However if it doesn't just sell all the ammo for MG bullets again and repeat the process until it does unlock.
Once you've got the above achievements out of the way sell all the ammo you have for MG bullets and then head to one of the vendors and keep making transactions for the last vendor related achievement. What I chose to do was speak to the vendor on the right and then buy an upgraded revolver, then buy the standard revolver next to it... then I bought the upgraded revolver and then bought the standard revolver. Repeat this process (or a similar one) until the next achievement unlocks;
Make 10 deals in weapon shops.
Once you've done that, pause the game and reload your last checkpoint... we're doing this so we haven't just lost all of our ammo. You should be right by the vendors, just before you spent or sold any of your ammo.
So now head back to the shack and pick up the Volt Driller. Go and sell it again and then go and grab the Heavy Auto Shotgun but don't sell it, you want to keep this. Then with all your lovely MG bullets which we don't need anymore, you can upgrade your weapons if you like and stock up on items but make sure you buy as many Sticky Grenades as the vendor will allow you to as we'll need them to work on another achievement. Now there's a VSV sniper rifle for sale here and you can buy it if you like but I strongly recommend that you don't. Not only can you pick one up for free later in the game but it's not a great idea to play with a sniper/shotgun combo.
It's best if you upgrade your weapons and make them silent. We'll be heavily relying on the use of silent kills in the next part of the game and so, please make sure to do this otherwise you'll have a much, much harder time getting through "Frontlines" with only stealth kills.
Once you're ready to carry on with the game. Head past the trolley cart and walk up to Andrew, he'll tell you to jump into the pit. As soon as you jump down turn and look at the floor. Behind the ladder's right leg is the final set of bullets to pick up. Once you pick it up (provided you've picked up all the others I've detailed in the walkthrough) you'll unlock the achievement for it.
Continue playing to unlock this secret achievement. (Secret)
While you're in the pit the trolley cart you passed earlier will roll overhead, once it stops you'll hear Andrew prompt you to climb into the luggage compartment (just above the ladder). For the time being you wont be able to move but you can look around using the RS, eventually the cart will be transferred to another track and a bunch of people will board. The cart will then depart and for a little while you'll listen in on the conversation of the recruits above, eventually though they'll shut up and you'll be done with this chapter.
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