After killing the scarab, get a grav lift out of the building in the middle, and fight your way to the top of the ramps. Dont go in the door, but go to the Right and jump on one of the pillars, then jump to the area infront of that. walk to the hole in the window and use your grav lift to jump through it. Your out of the level. I done this on splitscreen with my brother, and the holes in the leve where there was nothing, it showed his screen =o.
The Storm
When you get to the part where your supposed to take down the giant AA gun, go over to where the Sniper rifle is, then jump over the sandbags and go to the left and find a spot that looks jumpable, jump over the gorge, and walk around behind the fence. Now your out of th boundary
