Cheat List:
Enter at start screen before main menu.
*
Infinite Ammo: R2, R1, TRIANGLE, L2, L1, UP, R2, R1, TRIANGLE, L2,
L1, UP
* Add Weapon: UP, DOWN, LEFT, RIGHT, CIRCLE, SQUARE, UP, DOWN, LEFT,
RIGHT, CIRCLE, SQUARE
* Psychedelic Mode: UP, R2, CIRCLE, LEFT, TRIANGLE, SQUARE, L2, L1,
CIRCLE, R1
* Infinite Health: R3, L3, RIGHT, LEFT, L1, R1, R3, L3, RIGHT, LEFT,
L1, R1
* Unlock Missions and Pictures: L2, R2, L1, R1, L1, L2, L2, R2, L1,
R1, R1, R2