Assassination Mode 
     Enter SCOPE as a code to unlock Assassination Mode.

Explosive Scenery 
     To make the scenery, well, explosive, enter this code: BOOM.

Level Select 
     Enter PASSPORT as a code to unlock all of the levels in the game.
 
Protect Mode 
     Enter GUARDIAN as a code to unlock Protect Mode.
 
Team King of the Hill Mode 
     To unlock Team King of the Hill Mode, enter this code: TEAMWORK.
 
Unlock Demolition Level 
     Enter TNT at the cheats menu to unlock this multiplayer stage.

Unlock Goldeneye Level 
     Enter ORBIT in to the cheats menu to unlock this multiplayer stage.

Uplink Mode 
     Enter TRANSMIT as a code to unlock Uplink Mode.