Killzone 2 Walkthrough

The hall dumps you out behind some Helghast the other ISA are likely fighting, letting you get a drop on them to clear the rooftops. Look for a large doorway to the left that's open to a largish indoor room inside which are some Helghast that are begging for a grenade. Inside the room, at the bottom of the stair platform, is a piece of intel.

Climb the stairs and exit the smaller doorway. After passing through the doorway, turn around and look just above the door frame for the stage's final emblem. Follow the metal walkways outside to the next area.

Cableway Rooftops

Garza stops at the base of the stairs, and if you round the corner without him you'll witness a fellow ISA get pumped full of lead. Stay low on the stairs but peek up enough that you can start dropping the many Helghast surrounding the rooftop. There's a row of enemies on a slightly elevated platform to the left, and to your right, behind myriad bits of cover and some sand bags, are even more Helghast. Stick to the stairs and use the wall to your right and the higher stairs to your left as cover.

When you've cleared the rooftop, go to the top of the stairs and turn right. You can jump over a short stack of sand bags to gain access to a switch that activates the arc tower. The arc tower opens up, revealing two vulnerable, glowing bits. Start unloading bullets on one of the glowing bits until it explodes, and don't be too disappointed if the tower closes up again before you can destroy it.

Helghast will start populating the rooftops behind you, filling in where you left. Take cover behind sand bags and ignore them, focusing only on the arc tower. Wait for it to open up again and resume firing on its vulnerable parts. When you've destroyed both glowing bits, the stage ends.