Pause the game and then enter the following:
Code Effect Hold L2 and press Up, Left, Right, Down, Triangle, Square, Circle, and then X. All Weapons Hold L2 and then press Up, Left, Right, Triangle, Square, Circle. Collect Shield Hold L2 and press Down, Left, Right, X, Square, Circle. Infinite Ammo Hold L2 and press Up, Left, Down, Right, Triangle, Square, X, and Circle. Invincibility Hold L2 and then press X, X, Square, Square, Triangle, Triangle, Circle, Circle, X, X. Stealth Mode Hold L2 and the press Up, Down, Left, Right, Triangle, X, Square, Circle. Weapon's Secondary Attacks
Contributed By: alex cross.
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