Primary Collection of Cheats
Cheat Mode
Enter these codes at the main menu or in-game to activate their corresponding functions:
[Up], [Up], [Down], [Down], [Left], [Right], [Left], [Right] - Infinite Ammo
[Up], [Down], [Left], [Right], [Up], [Down], [Left], [Right] - Unlock All Stages
Watermark 20 Code
Enter the code when you are on the Pause Menu screen:
ZZZCZZCCZ - Toggle "Watermark 20" On/Off