Killzone 3 Walkthrough - Scrapyard Shortcut: Part 2
6Full Walkthrough: http://www.gamefront.com/killzone-3-walkthrough/
At the top of the ramp, you'll find an ammo dump and then a cutscene. Right afterward, you'll face a bunch of enemies — sentry bots, a sniper, regular riflemen and a machine gun nest. Kill the sniper with your boltgun first, then clear out the sentry bots with it.
TROPHY: There's a tricky trophy you can get here if you're careful and savvy with the boltgun. It requires some planning and some luck, though, so be careful. Do your best to clear out all the riflemen except the machine gunner (be careful also of a sniper returning to the perch above). Then move up on the left side to as close as you can get to the machine gunner. Just behind him to the right is an explosive barrel — position yourself so that when you shoot him with your boltgun, you'll pin him to the barrel (headshots won't do it). Execute the shot and the "Power Spike" trophy is your reward.
Mop up the last Helghast and you'll be able to climb up to the crane controls. Once you're up there, grab the sniper rifle from the front side and get down — a drop ship is about to unload some troops. You can take shots at them in the ship if you want, but you'll need to snipe an RPG trooper when he hits the ground.
Keep shooting at these guys and try to clear them out. They'll run forward trying to get to you, and if they get too close, the light troopers among them will climb the ladders to get up and flank you. Switch to your shotgun pistol if that happens and you'll handle them easily.
After the first group, you'll face a second wave from another drop ship. Repeat the process — take them out the same way, and watch out for more to hit the ladders.
The last group will be right in front of you, basically. Tear into them with whatever gun you've got handy. They shouldn't pose too much of a threat.
Right after the Helghast troops die, you'll see sentries coming your way. Snag your boltgun again to take them out fast when they stop moving. That'll trigger the cutscene in which Rico blasts open the way forward.
Switch to your boltgun as you move through the gate. Just ahead, you'll start to see heavy weapons troopers — they're tougher to kill (although headshots do the trick) and carry LMGs. A bolt will still put them down in one, though.
Fight through the LMG troops and kill a few light Helghast as you go and you'll soon enter another area that's walled off, where you'll encounter a Heavy — a heavily armored trooper carrying a machine gun. Stay clear of him and instead use your boltgun on his minions, then look for a weapon rack.
TROPHY: You'll want the StA-14 rifle for this. It's single -action and highly accurate. The Heavy can be brought done by shooting him in the head, then firing at the red tank on his back to destroy him. Do this with the StA-14 (and ONLY that, and I think that includes blowing up barrels) to grab the "Pinpoint" Trophy.
The Heavy isn't too difficult, but there are lots of things that can explode in this area, so be careful. Use your boltgun to quickly dispatch the smaller Helghast units, then crank the Heavy in the head until he turns around, and blast his red tank. He'll eventually explode, allowing you to progress.
Full Walkthrough: http://www.gamefront.com/killzone-3-walkthrough/