Killzone 3 Walkthrough - Icy Incursion: Part 4
1Full Walkthrough: http://www.gamefront.com/killzone-3-walkthrough/
Breaching the Last Base
When you land after the cutscene, you'll need to work your way up on the left to avoid the machine gun nests. Sprint from position to position until you get alongside the bunker, then take cover there and start finishing off the Helghast defenders.
You'll only have to kill three or so in order to enter the building. Inside are a couple more and on the stairs to the left you'll encounter another trooper. Fight your way up to the top level, using the stairs for cover as you clear out the last few defenders. Then jump on the WASP gun emplacement.
Straight across from you is the first machine gun nest — get a red lock with your reticule and blast it. Right after that, you'll have to take out a second one a little to the left: hold down the fire button to blast it.
With those cleared, you'll see a Helghast drop ship approaching. You guessed it — hit it with missiles. It should go down in one or two volleys.
Finally, your comrades will start to yell about an approaching tank. Click R3 to switch to artillery mode and target the tank to take it out and protect your team. Then hit Triangle to disengage the gun and take it with you.
Head back out of the bunker and immediately turn left and you'll see the last machine gun nest, along the left side of the big field. Take it out, switch to a rifle, and sprint all the way back to the right. You need to avoid taking fire from the other WASP turrets on top of the bunker on the right side of the field, and there's also a tank to deal with.
When you hit the right side wall of the area, work your way toward the buildings ahead, fighting off the Helghast ground troops. Your goal is to get as close to the building as you can, as quick as you can, to avoid taking missile fire. As soon as the coast is clear, climb the stairs you find there to the next floor up, then take cover.
Two more Helghast troops await up here, and one is even higher above your position. Pop out and put headshots on them, then wrap around to the right to get into the building. Kill the one or two Helghast inside and descend the stairs, where you'll find another one. Here you'll find an ammo dump.
You can go outside from here and fight the tank, but it's easier to go to the roof — you'll have to do it anyway. Climb back up inside the bunker, go back outside and take the stairs to the top. You'll hit the roof, where you'll find a few distraught WASP gunners that you can take out.
Grab one of the mounted guns, switch it to artillery, and blast the tank to take it out. You're free to head inside and trigger another cutscene.
Full Walkthrough: http://www.gamefront.com/killzone-3-walkthrough/