Duke Nukem - Time To Kill cheats and cheat codes for Playstation

Pause the game and press the following button combinations:

Extra damage: L2, R2, L2, R2, L2, R2, L2, R2, L2, R2. 
Get all items: R1(5 times), L2(5 times). 
Get all keys: Up, Right, Up, Left, Down, Up, Right, Left, Right, Down. 
Get all weapons: L1, L2, Up, L1, L2, Down, R1, Right, R2, Left. 
Giant head Duke: R1(9 times), Up. 
Giant head opponents: R1(9 times), Left. 
God mode: L2, R1, L1, R2, Up, Down, Up, Down, Select, Select. 
Intro: Select, Up(9 times), Select, L1. 
Invisibility: L1, R1, L1, R1, L1, R1, L1, R1, L1, R1. 
Kilt movie: Select, Up(9 times), Select, R2. 
Pin head Duke: R1(9 times), Down. 
Pin head opponents (alternate): R1(3 times), L1(3 times), R2(3 times), Right.
Pin head opponents: R1(9 times), Right. 
Powered-up weapons: R1, R2, L2, L1, R1, R2, L2, L1, Select, Select. 
Temporary invincibility: R1, L2, L1, L2, R1, L1, R1, L2, L1, L2. 
Unlimited continues: Left, Right, Up, Left, Right, Down, Left, Right, L1, R1. 
Victory movie: Select, Up(9 times), Select, L2. 
Watch the credits: Select, Up(9 times), Select, R1. 

Unlimited ammo: 
Left, Right, Left, Right, Select, Left, Right, Left, Right, Select. 


Select any stage:
Pause the game play and press Down(9), Up, then quit from the current 
game. At the main menu, choose the new "Time To Kill" selection, then 
press Right or Left to choose a stage, then press X to start to play 
on it.

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