God mode
Press R3, L3, Right, Left, L1, R1, R3, L3, Right, Left, L1, R1 at the "Press Start" screen.
Unlimited ammunition
Press R2, R1, Triangle, L2, L1, Up, R2, R1, Triangle, L2, L1, Up at the "Press Start" screen.
Psychedelic mode
Press Up, R2, Circle, Left, Triangle, Square, L2, L1, Circle, R1 at the "Press Start" screen.
All missions and gallery pictures unlocked
Press L2, R2, L1, R1, L1, L2(2), R2, L1, R1(2), R2 at the "Press Start" screen.
Add weapon
Press Up, Down, Left, Right, Circle, Square, Up, Down, Left, Right, Circle, Square at the "Press Start" screen. The "Add Weapon" option will now appear when the game is paused.
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