Cheat mode
Hold L1+R1+R2 and press Select to enable cheat mode. If you entered the code correctly, "Cheats Enabled" will appear at the top of the screen. Then, one of the following codes may now be enabled:
God mode
Hold L1+R1+R2 and press Up, Down, Left, Right.
Invulnerable
Hold L1+R1 and press Up, Down, Left, Right.
Infinite weapons
Hold L1+R1 and press Up, Down, Up, R2.
Powered-up weapons
Hold L1+R1+R2+X and press Down.
Hornet nest stingers
Select stingers, then press L1+L2+R1+Triangle+Left.
Play as Big Daddy
Enter Triangle, Square, R2, X, Triangle, R2 as a password. Then select "Challenge" mode and choose the "Nuke York" level to enable Big Daddy on the vehicle selection screen.
Submitted by Nintendosnut
Play as Alien saucer
Enter R1, Square, X, Square, L2, Circle as a password.
Submitted by Nintendosnut
Play as Goliath
Enter Triangle, L1, R1, X, L2, L2 as a password.
Submitted by Nintendosnut
Play as Nightshade
Enter R1, R2, L1, L1, X, Circle as a Password.
Submitted by Nintendosnut
Play as Helicopter
Enter L1, Triangle, R2, Triangle, Triangle, R1 as a password.
Submitted by Nintendosnut
Funtopia level
Enter X, Circle, L2, X, Square, L1 as a password to unlock the Funtopia level under "Challenge" mode.
Submitted by Nintendosnut
Gulch level
Enter X, Square, Circle, L1, L2, Square as a password to unlock the Gulch level under "Challenge" mode. Alternately, enter Square, Square, Triangle, R1, L1, Circle as a password.
Submitted by Nintendosnut
Boss Battle 1
Enter Circle, R2, R1, Square, L1, R2 as a password. Note: Re-enter this code after every challenge battle. The first opponent will be a normal, random, character. Your opponent will transform into a Goliath after the battle.
Submitted by Nintendosnut
Boss Battle 2
Enter Circle, Circle, L2, L1, Triangle, Triangle as a password.
Submitted by Nintendosnut
Boss Battle with Big Daddy
Enter Square, Triangle, Circle, Circle, R2, R2 as a password. Then select "Challenge" mode and choose "Nuke York" level to battle against Big Daddy.
Submitted by Nintendosnut
Double pick-ups
Enter L1, L2, Circle, L1, R1, Square as a password.
Submitted by Nintendosnut
Increased armor
Enter R1, Triangle, R1, Triangle, L1, Square as a password.
Submitted by Nintendosnut
Infinite turbos
Enter Square, X, Circle, Triangle, R1, R2 as a password. Note: The special bar will still decrease, but turbos will still be available after it runs out.
Submitted by Nintendosnut
Infinite jump
Enter Circle, Square, R2, X, Triangle, R2 as a password.
Submitted by Nintendosnut
View Duke Nukem: Time To Kill FMV sequence
Enter Square, Square, Circle, Circle, Triangle, Triangle as a password.
Submitted by Nintendosnut
Alternate views
While playing a game it one player mode, hold R1+Select and press Down to switch to an overhead, and helicopter view. In multi-player mode, this will alternate how the screen is split.
Submitted by Nintendosnut
Full screen view
While playing a game, hold R1+Select and press Up to remove all items from the screen.
Submitted by Nintendosnut
Combo moves
Move Code
Jump press L1+R1
Shield Hold Triangle and press
Up, Right, Down, Left
Stun Hold Triangle and press
Right, Left, Up
Cash suck Hold Triangle and press
Left, Right, Up
Rear fire Hold Triangle and press
Right, Left, Down
Mine Hold Triangle and press
Left, Right, Down
Up on 2 wheels to the left Hold Triangle and press Up, Down,
Left
Up on 2 wheels to the right Hold Triangle and press Up, Down, Right