Tip of the Spear - The Big Push

Once the window on the other Assault Derrick breaks, shoot the driver inside quickly!

Defend Your Assault Derrick

Resume your position on the turret, but don't worry about the flood of enemies about to appear. However, a fellow Assault Derrick has been overtaken by the enemy, and will soon begin attacking from the right. Shoot the enemies onboard with the turret, but you may have to disengage briefly to kill a foe or two who'll hop onto your ride, shortly after the two vehicles take differing paths. Soon thereafter, the opposing vehicle will begin to ram yours, which will smash its windshield —- you must quickly kill the driver before reaching the bridge, otherwise you're going off the cliff.

Protect the Assault Derrick From Brumaks

So you won the great battle over the bridge, but it's not over yet, as you're going to have to defend yourself from several Brumaks—well, at least it seems that way, you really only need to attack one. That's right, one. In fact, you can set the controller down on the ground until the very end of this segment (just after the Corpser drags an ally Derrick underground) when the final Brumak fires rockets at your vehicle. As soon as he comes into view, target the gun on his back and don't let off until he's down for the count.