Expert mode:
Get A ranking on all stages of the game.
Last Story:
Beat every sixth stage in story mode, then see all ten Hero and Dark story line endings.
Level 2 weapons:
Beat both the Hero and Dark versions of a story line.
Egg Vacuum:
Successfully complete the Neutral story line with the Hero ending. You can use the Egg Vacuum to suck up 20 objects and gain an extra life.
Heal Cannon:
Beat the Hero story line.
Omochao Gun:
Beat the Semi Hero story line.
Satellite Laser:
Beat the Semi Dark story line.
Samurai Blade:
Beat the Dark story line.
Shadow Rifle:
Beat the Last Story.