Killzone 3 Walkthrough - The Reckoning: Part 2
4Full Walkrhtrough: http://www.gamefront.com/killzone-3-walkthrough/
You're going to have to take out that huge spider-like MAWLR. It's not impossible, but you'll have to pay attention or you'll buy it pretty easily. Run to the nearby bunkers when you arrive and get to know the ammo drops. Grab the WASP missile launcher from the wall rack.
When you see the MAWLR fire is big green cannon, flip the WASP to artillery mode and hit the glowing orange heat vents to damage it. Each time you do, however, you'll trigger a reprisal. The first one is mortars.
The bunkers will hold up to attacks for a while, but don't expect them to protect you forever. The roofs will cave in, and toward the end of the battle, the MAWLR will level them completely. It's safer, in fact, to try to get in and get out in order to get the resources you need.
After the first hit on the MAWLR, it'll attack you with a machine gun bank. Hit the machine guns with the WASP's missiles to take them out. After that, hit the next vent and dodge the mortar strike.
Ammo up and get ready. You'll have a ton more machine guns to deal with this time, as well as jetpack troopers. Ignore the troops, stand inside a bunker and try to use the walls and ceiling for cover while you knock out all three machine gun emplacements. After that, you'll get your shot on the next heat vent, and your troops should handle the jetpackers.
The MAWLR gets a little more upset this time around, unloading on you with all kinds of stuff. Be careful in the buildings, as they draw the brunt of fire. You might need to bail out to avoid the enemies weapons. Hit a couple more machine guns on the MAWLR with missiles.
Wait for your chance and hit the MAWLR again. During the next round, the MAWLR will sweep its cannon over the buildings, annihilating them. You'll want to be pretty much as far to the left of this area as you can be (which is toward the end opposite where you started). Make sure your WASP is full, because you'll want it.
Right around the time the MAWLR leaves you alone, a bunch of Helghast ground troops arrive. They come into the middle of your area in a troop carrier — if you quickly get the WASP out, you can artillery strike it and deal with most of them.
After that, use your assault rifle to defend yourself. You won't be done killing Helghast before the MAWLR starts to event again — hit it with the WASP regardless of what's going on to trigger the cutscene and victory.
Full Walkrhtrough: http://www.gamefront.com/killzone-3-walkthrough/