During a game, press Y, A, B, X, Y, Down.

Unlock the Rocket Launcher and Other Items

During a game, press Y, A, B, X, Y, Left.

Unlock Shotgun and Other Items

During a game, press Y, A, X, B, B, Up.

Unlock Sniper Rifle and Other Items

During a game, press Y, A, B, X, Y, Right.

Unlock SMG and Other Items

During a game, press Y, A, B, X, Y, L.

Unlock Unlimited Ammo

During a game, press Y, A, B, X, A, Right.

Unlock the Nail Gun

During a game, press Y, A, B, X, A, Left.

Blind Enemies

During a game, press Y, A, B, X, X, Left.