Higher Limits
In the Fuel Depot, if you start in the housing area for the vehicles, run to snag the LongShot and then run to the right. There is a small box with a larger box next to it. Go to the end of the small box that is closes to where you started and hide against it. Then, jump onto the box and lean into the larger box. You should be standing then. Crouch with the Left Stick and then climb onto the larger box by pressing forward and A. Use this position to snipe people.
More tricks, tips and cheats for this game are right here - Gears of War cheats
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