A cool glitch is to be able to shoot through walls with the tank.
You aren't really shooting through the wall, your gun is through the wall. This glitch can be hard to do sometimes, and easy other times. Simply move the tank so that it is as close as possible to the wall you want to shoot through, for example a base in blood gultch. Nest move the end of the turret so that it is sticking through the wall, and in the room the enemy payer is in. Now simply shoot, hopefully it works and kills the enemy. This works best with thin walls.