Successfully complete the Mansion level in story mode.
Cheat mode
Enter the "Extras" menu and select the "Cheat" option. Then, enter one of the following codes to activate the corresponding cheat function. A message will confirm correct code entry.
Clown costume
Successfully complete the Kooky Carnival level in story mode.
Concept art
For each Timed Level that is completed, you will unlock the concept art for that level.
Double weapon damage
Enter BIGGUNZ as a code.
Flight Suit costume
Successfully complete the Space Ship level in story mode.
General costume
Successfully complete the Volcano Lair level in story mode.
Invincibility
Enter ARMOR as a code.
Invisible HUD
To make your HUD invisible, insert the following password at the in-game password screen: BLINK.
No items dropped when killed
Enter NODROP as a code.
Permanent Fairy in Modern Mode levels
Enter FAIRY as a code.
Samurai costume
Successfully complete the Space Ship level in story mode.
Soldier costume
Successfully complete Area 51 level in story mode.
Spy-Bot costume
Successfully complete the Robot Factory level in story mode.
Timed levels
Successfully complete every level in Single Player Modern Mode to unlock the Timed levels.
Worker costume
Successfully complete the Oil Rig level in story mode.
Zombie costume
Successfully complete the Haunted House level in story mode.
