Cheat mode: At the main menu, highlight the "Extra Content" option and press R1 to display the "Password Entry" screen. Enter one of the following codes to unlock the corresponding cheat. Then, choose the "Mission Select" option in the "Extra Content" menu. Start the game through that option after toggling the desired cheats on or off.
Cheats
•All powers: Enter 537893 as a password. Alternately, successfully complete the game.
•Infinite ammunition: Enter 978945 as a password.
•Bulletproof: Enter 548975 as a password.
•Super Psi: Enter 456456 as a password.
•No head: Enter 987978 as a password.
•Arcade mode: Enter 05051979 as a password. Alternately, successfully complete the game to unlock the "Arcade" option at the "Extra Content" menu.
•Co-op mode: Enter 07041979 as a password.
•Survival mode: Enter 7734206 as a password. Alternately, find the Gnome in level 3 to unlock the "Survival" option at the "Extra Content" menu.
•Dark mode: Enter 465486 as a password.
Extra Mission(mini-Games)
•Barret Training: Enter 196006 as a password.
•Aura Pool mission: Enter 659785 as a password. Alternately, find the Gnome in level 8 to unlock the Aura Pool mission.
• Pit mission: Enter 154897 as a password. Alternately, find the Gnome in level 4 to unlock the Pit mission.
•Bouncy Bouncy mission: Enter 568789 as a password. Alternately, find the Gnome in level 2 to unlock the Bouncy Bouncy mission.
•Gasoline mission: Enter 9442662 as a password. Alternately, find the Gnome in level 6 to unlock the Gasoline mission.
•Gear Gauntlet mission: Enter 154684 as a password. Alternately, find the Gnome in level 3 to unlock the Gear Gauntlet mission.
•Gnomotron mission: Enter 456878 as a password. Alternately, find all Gnome in the game to unlock the Gnomotron mission.
•Panic Room mission: Enter 76635766 as a password. Alternately, find the Gnome in level 3 to unlock the Panic Room mission.
•Pitfall mission: Enter 05120926 as a password. Alternately, find the Gnome in level 4 to unlock the Pitfall mission.
•Psi Pool mission: Enter 565485 as a password. Alternately, find the Gnome in level 6 to unlock the Psi Pool mission.
•Stop Lights mission: Enter 945678 as a password. Alternately, find the Gnome in level 7 to unlock the Stop Lights mission.
•Tip The Buddha mission: Enter 428584 as a password. Alternately, find the Gnome in level 1 to unlock the Tip The Buddha mission.
•TK Alley mission: Enter 090702 as a password. Alternately, find the Gnome in level 2 to unlock the TK Alley mission.
•Up And Over mission: Enter 020615 as a password. Alternately, find the Gnome in level 4 to unlock the Up And Over mission.
Costumes
•Barrett costume: Enter 497878 as a password. Alternately, successfully complete the game on the elite difficulty setting to unlock the Barrett costume.
•Bikini Pyro costume: Enter 135454 as a password. Alternately, successfully complete the game on the elite difficulty setting to unlock the Bikini Pyro costume.
•Burnt Soldier costume: Enter 454566 as a password. Alternately, successfully complete the game on the normal difficulty setting to unlock the Burnt Soldier costume.
•Clown General costume: Enter 431644 as a password. Alternately, collect all six orbs in the General Boss battle to unlock the Clown General costume.
•Dockworker costume: Enter 364654 as a password. Alternately, successfully complete the game on the easy difficulty setting to unlock the Dockworker costume.
•Dragon Wei Lu costume: Enter 978789 as a password. Alternately, successfully complete the game on the hard difficulty setting to unlock the Dragon Wei Lu costume.
• Pyro costume: Enter 231644 as a password to unlock the Pyro costume.
•General costume: Enter 459797 as a password. Alternately, successfully complete the game on the elite difficulty setting to unlock the General costume.
•Jack costume: Enter 698798 as a password. Alternately, successfully complete the game on the elite difficulty setting to unlock the Jack costume.
•Jov costume: Enter 468987 as a password. Alternately, successfully complete the game on the elite difficulty setting to unlock the Jov costume.
•Komiko costume: Enter 978798 as a password. Alternately, successfully complete the game on the normal difficulty setting to unlock the Komiko costume.