Unlock all weapons

Go to the Menu screen and hold L and press X, B, Down, Left, B, B, Y.

Unlimited rage

Pause game play, then hold L and press Left, Down, Left, Down, Right, Up, Right, Up.

Escorted NPCs are invincible

Pause game play, then hold L and press X, B, Y, A, X, B, Y, A. This code can only be enabled in levels that you are escorting NPCs.

Daywalker difficulty setting

Hold L and press Left, B, Up, Down, X, B, A at the main menu.

Unlimited ammunition

Pause game play, then hold L and press Left, B, Right, X, Up, Y, Down, A.

Level select

Hold L and press Down, Up, Left(2), B, Right, Down, X at the main menu.

Unlimited health