All Modern Mode levels in single player mode -
Enter PROHIAS as a code.
All Multi-player levels -
Enter MADMAG as a code.
All Spy attachments -
Enter DISGUISE as a code.
All Story Mode levels -
Enter ANTONIO as a code.
Aristocrat costume -
Successfully complete the Mansion level in story mode.
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.
Flight Suit costume -
Successfully complete the Space Ship level in story mode.
General costume -
Successfully complete the Volcano Lair level in story mode.
Invulnerability -
From the main menu, go to the "Extras" screen. Then go to "Cheats" and
there's a field to enter Passwords. Enter "ARMOR" and press "Enter."
Permanant Fairy -
From the main menu, go to the "Extras" screen. Then go to "Cheats" and
there's a field to enter Passwords. Enter "FAIRY" and press "Enter."
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 all levels 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.