Killzone 3 Walkthrough - Scrapyard Shortcut: Part 4
Full Walkthrough: http://www.gamefront.com/killzone-3-walkthrough/
As you head to the top level, you'll find yourself walking into the engagement range of a machine gun nest. Get cover and make that your top priority. After you've blasted the gunner, look to the right for a couple more riflemen who are problematic and take them out.
You'll make your way up the stairs and find walkways that wrap around the sides of the area, with some mounted machine guns you can use just ahead. There are also a whole bunch of jetpack troopers, and they like to hover above you and massacre you.
Grab a minigun and go to town. Try to keep looking up for jetpackers and clear them out quickly. If you need cover, detach the gun and fall back a little ways, but keep firing.
Eventually you'll knock out all the jetpackers and can move forward. Detach a full minigun and start moving along the path. Use it to grease just about everything you come into contact with.
You'll descend a ramp and wallop a bunch of Helghast fairly easily with your reinforcements and your minigun. As you hit a landing just past the majority of them, you'll see two paths that lead down to AA guns. You can destroy them with your minigun (there are more on either side of the landing above the AA guns) or you can use the missile launcher lying nearby.
With the guns killed, it's just a matter of descending and mopping up approaching Helghast. If you're into it, snag an additional fresh minigun and start wading through the bodies. Keep your gun spinning all the way to the bottom and use a demo charge to blow the door open.
There are two or three more Helghast for you to finish off before you can go into the control room and end the chapter.
TROPHY: The "You Drive" Trophy is yours when you get to the control room.
Full Walkthrough: http://www.gamefront.com/killzone-3-walkthrough/