Arcade mode:
Enter EDACRA as a name.

Delete saved games:
Press Left(2), Right, Left, R(2) at the copyright screen.

Delete high scores:
Press Up(2), Down, L, R, L at the copyright screen.

Super Agent mode:
Successfully complete the game with all Primary Objectives and Secondary Objectives.

Hint: Cheats:
Look in boxes, side roads, and places you do not often go to find cheats. They resemble yellow stars. There is one per level. The cheats are: Infinite Stealth, Infinite Turbo, Unlimited Machine Gun Ammo, Unlimited Rockets, Unlimited Special Ammo, Higher Top Speed 1, Higher Top Speed , Super Armor 1, Super Armor, and Alternate Cars. The alternate cars are a helicopter, limo, old car, weapons van, armored blue 6 wheeler, 18 wheeler cab, and Hummer.