Galerians: ASH

Hard mode:
Successfully complete the game on the normal difficulty setting with a "B" or higher rank to unlock hard mode.

Short mode:
Successfully complete the game on the easy or normal difficulty setting to unlock short mode. Load the cleared saved game to toggle short mode.

Lv3PK mod:
Successfully complete the game on the hard difficulty setting with an "S" rank to unlock Lv3PK mode.

Alternate ending sequence:
Successfully complete the game on the normal or hard difficulty setting.