Pause the game and press one of the following combination to enable the desired effect:
Rogue Ops: Left, Right, Right, Left, Left, Right, Right, Left, Left, Right, Right, Left, X, X
1/2 Damage: X, X, Y, Y, Left, Left, Right, Right, Y, Y, X, X
Unlimited Ammo: X, Y, X, Y, X, Y, X, Y, Left, Y, X, Y, X, Y, X, Y, X
One Shot Kills: Y, Left, Right, Right, Left, Y, R, L, Y, X, X
Fiery Crossbow: Left, Right, Right, Left, X, Y, R, L, X, Y, Left, Right
Crossbow Missiles: Right, Right, Left, Left, R, R, L, L, Y, Y, X, X
Sniper Explosives: R, L, Right, Right, Left, Left, Right, Right, L, R, X, Y
Sniper Missiles: X, Left, Right, R, L, Right, X, L, L, R, Left, Left
Huge Gun: X, X, X, X, Y, Y