Unlimited rage
Pause the game while playing, then hold L1 and press Left, Down, Left, Down, Right, Up, Right, Up.

Every weapon
At the main menu hold L1 and press Square, Circle, Down, Left, Circle(2x's), Triangle.

Level select
At the main menu hold L1 and press Down, Up, Left(2x's), Circle, Right, Down, Square.

Unlimited health
Pause the game while playing, then hold L1 and press Triangle, Square, Triangle, Square, Triangle, Circle, Triangle, Circle.

Escorted NPCs are invincible
Pause the game while playing, then hold L1 and press Square, Circle, Triangle, X, Square, Circle, Triangle, X. This code can only be used in levels that you are escorting NPCs.

Unlimited ammunition
Pause the game while playing, then hold L1 and press Left, Circle, Right, Square, Up, Triangle, Down, X.

Daywalker difficulty setting
At the main menu hold L1 and press Left, Circle, Up, Down, Square, Circle, X.