PS1
All Cheats
Go to the cheat menu and press L1, L2, R2, R1, L1, L2, R2, R1, L1, L2, R2, R1, L1, L2, R2, R1, Circle (4 times), X (4 times), Square (4 times), Select (4 times)
PS1
God Mode
Go to the cheat menu and press L1, Square, Circle, Circle, Square, L1, L2
PS1
Do 2X Damage
Go to the cheat menu and press Square, Square, Square, Circle, Circle, Circle, X
PS1
Be Invisible for a short time
Go to the cheat menu and press L1 (six times), R2
PS1
Pick Level
Go to the cheat menu and press Circle, X, Square, Square, X, Circle, Square
PS1
1st Person View
Go to the cheat menu and press L2, R1, L1, R2, Circle, X, Square
PS1
Invisible Duke
Go to the cheat menu and press Square, X, Circle, Square, X, Circle, Square
PS1
Max Armor
Go to the cheat menu and press L1, L1, R1, R1, X, X, Circle, Circle
PS1
Max out Ego
Go to the cheat menu and press R1, R1, Circle, Circle, L1, L1, R2
PS1
Small Heads
Go to the cheat menu and press X, L1, X, R1, X, X
PS1
Big Heads
Go to the cheat menu and press X, X, R1, X, L1, X
PS1
Outtake FMV's
Go to the cheat menu and press L1, L2, R1, R2, Square, Square, Circle, Circle
PS1
Last FMV
Go to the cheat menu and press Circle, R2, L1, Square, L2, X, R2
PS1
Duke with Small Head
Go to the cheat menu and press Square, X, Circle, Circle, X, Square, Square
PS1
Duke with Big Head
Go to the cheat menu and press Square, Square, X, Circle, Circle, X, Square
PS1
Crazy FMV's
Go to the cheat menu and press L1, L2, R1, R2, Circle, Circle, Square, Square
PS1
Get Weapons
Go to the cheat menu and press R2, X, L1, Square, R1, Circle, L2
