Pause the game, hold L + R, and enter the following codes:
| Up, Up, Down, Down, Left, Left, Right, Right, Square, Triangle | Invincibility |
| Triangle, Triangle, X, X, Square, Circle, Square, Circle, Right, Down | Unlimited Ammo |
| Up, Up, Down, Down, Left, Right, Left, Right, X, O | All Weapons and Weapon Upgrades |
| Triangle, Triangle, X, X, Square, Circle, Square, Circle, Down, Right | Refill Ammo |
Thanks to Revolution reader Sandoval!
