All weapons and missions
Press [L], [Black], [White], [R]x2,
[White], [Black], [L] at the main menu.
Unlimited ammunition
Press [Start] to pause game play, then press [R],
[L], [Black]x2, [White], [R], [L], [Black],
[White]. Repeat this code to disable its effect.
Invincibility
Press [Start] to pause game play, then press [L]x3,
[Black], [L], [R]x2, [L], [Black]. Repeat
this code to disable its effect.