Complete ALL the mission objectives as well as the primary objectives within the indicated amount of time to unlock the corresponding cheats. To activate the cheats go to 'System Options' then 'Extras' and select 'Cheat Grid'. To play the FMV sequences unlocked in the 'Cheat' menu choose the 'Movie Player' option that is above 'Cheat Grid'.
Unlock Saliva Spy Hunter Video: Complete level 1 in 3:40.
Unlock Green HUD (Heads Up Display): Complete level 2 in 3:35.
Unlock Saliva Your Disease Video: Complete level 3 in 2:40.
Unlock Night Vision: Complete level 4 in 3:15.
Unlock Early Test Animatic Video: Complete level 5 in 3:25.
Unlock Extra Cameras: Complete level 6 in 3:45.
Unlock Rainbow HUD (Heads Up Display): Complete level 7 in 3:10.
Unlock Inversion Camera: Complete level 8 in 3:05.
Unlock Concept Art Video: Complete level 9 in 3:45.
Unlock Fisheye View: Complete level 10 in 3:15.
Unlock Camera Flip: Complete level 11 in 3:10.
Unlock Puke Camera: Complete level 12 in 3:30.
Unlock Making Of Video: Complete level 13 in 2:15.
Unlock Tiny Spy: Complete level 14 in 5:10.
Unlock Hover Spy: Complete the entire game.
Unlock Super Spy: Complete ALL 65 objectives in the game for unlimited ammunition and invincibility for your car.
Choose an agent at the start of the game and then select an empty slot and enter the following codes (without the quotes) as a name to unlock the corresponding bonus at the 'Extras' menu. If the code has been entered correctly you will hear a clucking sound as confirmation.
Unlock Classic Spy Hunter Minigame: Enter the code 'OGSPY'
Unlock Early Test Animatic FMV: Enter the code 'WWS413'
Unlock Saliva: Spy Hunter Theme FMV: Enter the code 'GUNN'
Unlock Saliva: Your Disease FMV: Enter the code 'SALIVA'
Unlock Spy Hunter Concept Art FMV: Enter the code 'SCW823'