Killzone 3 Walkthrough - Scrapyard Shortcut: Part 1
2Full Walkthrough: http://www.gamefront.com/killzone-3-walkthrough/
The entire first section of this mission is enemy free. Follow Rico all the way to the cutscene. When you get control back, grab a bolt gun from the weapons rack as you head back into the scrapyard.
Step to the bridge and take cover on the side of it as drones fly toward you. Switch to the boltgun and wait for them to stop moving, then hit them with a bolt to take them out. There's an ammo dump to the left here, so feel free to go nuts.
After the drones, Helghast troops start filling in the spaces up ahead. Repeat the process and take them out.
Move up, but be careful — there are a couple of light troopers around these corners that will attack you up close. Brutal melees work well against them, especially if they go after Rico first. Past them, you'll fight a couple of drones and face Helghast on high ground around the corner. Drop both enemies and put a charge on the gate to blow it open.
Follow Rico through. Just ahead are two more light troopers for you to kill up close. Take the corner past them carefully, as two regular Helghast wait on the ramp just past this area.
Full Walkthrough: http://www.gamefront.com/killzone-3-walkthrough/