Get a sniper rifle, then go to the side of the main wheel (right side) near the explosive barrels. Get in the little gap between the floor and the wheel. Crouch and go all the way back against that little space. It resembles a little triangle. Once you are against the wall, run and jump in the very tip of the edge of that cliff. Try landing on the stone handlebar that is to the right side of where you take the sniper rifle... If timed correctly, you will jump very high. While in the air you can crouch and land on top of the wheel. This is very useful when you are playing team slayer, no shields, or even regular slayer. Once you are in the top you can jump in the house were the camo is located.