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