Level select
Pause game play and press Down(9), Up, then exit the current 
game. Select the "Time To Kill" option at the bottom of the 
main menu, press Left or Right to select a level, then 
press X to begin game play. 

Temporary invincibility
Pause game play and press R1, L2, L1, L2, R1, L1, R1, L2, L1, L2. 

Invincibility
L2, R1, L1, R2, Up, Down, Up, Down, Select(2). 

Unlimited continues
Pause game play and press Left, Right, Up, Left, Right, Down, 
Left, Right, L1, R1. 

Invisibility
Pause game play and press L1, R1, L1, R1, L1, R1, L1, R1, L1, R1. 

Unlimited ammunition
Pause game play and press Left, Right, Left, Right, Select, 
Left, Right, Left, Right, Select. 

All weapons
Pause game play and press L1, L2, Up, L1, L2, Down, R1, 
Right, R2, Left. 

Powered-up weapons
Pause game play and press R1, R2, L2, L1, R1, R2, L2, L1, 
Select(2). 

All items
Pause game play and press R1(5), L2(5). 

All keys
Pause game play and press Up, Right, Up, Left, Down, Up, 
Right, Left, Right, Down. 

Extra damage
Pause game play and press L2, R2, L2, R2, L2, R2, L2, R2, 
L2, R2. 

Big head Duke
Pause game play and press R1(9), Up. 

Small head Duke
Pause game play and press R1(9), Down. 

Big head opponents
Pause game play and press R1(9), Left. 

Small head opponents
Pause game play and press R1(9), Right. Alternatively, pause 
game play and press R1(3), L1(3), R2(3), Right. 

Introduction sequence
Pause game play and press Select, Up(9), Select, L1. 

Victory sequence
Pause game play and press Select, Up(9), Select, L2. 

Kilt sequence
Pause game play and press Select, Up(9), Select, R2 

View credits
Pause game play and press Select, Up(9), Select, R1. 

Game completed
Hold L2 + R2 and press Square, Triangle, Circle(2), Start 
during game play. 

Rogue Trip FMV sequence
Press L1 + L2 + R1 + R2 at the GT Interactive logo during 
the opening sequence.