Unreal Championship Cheats for XBox
Invisibility Power up - Right, Right, Left, Left
Regeneration Power up - Down, Down, Down, Down
Agility Power up - Down, Down, Up, Up
Berserk Power up - Up, Up, Up, Up
When you get a T.A.G. rifle, before you use it, aim it up to the sky. Hold down fire and press B to change weapon until you come all the way back to the T.A.G. Now use it once and it will say you have 0 ammo but you can keep firing it so long that you don't change your weapon.