Level select: pause the game and enter L1, L1, L2, L2, R1, R1, R2, R2. NOTE: you will need to keep an eye out for when it stops working and enter it again.
All wepons: pause the game and enter L1, L2, R1, R2, TRIANGLE, CIRCLE, X, SQUARE. You will also get ful ammo and 8 painkillers.
Level select: press select during play to return to the main menu now enter:
UP, DOWN, LEFT, RIGHT, UP, LEFT, DOWN, CIRCLE. This cheat only works when you have got past the first chapter.
Added by: Dobby the sheep Oct 17th 2005, ID#17663