Alternate Hibana costumes:
Successfully complete the game under the normal or hard difficulty settings. A
different alternate costume will be unlocked under each setting.
Alternate Hisui costume:
Collect all 88 Secret Clan Coins in the game.
Play as Hisui:
Successfully complete the game under the easy difficulty setting.
Play as Hotsuma:
Insert a memory card with a saved completed game from Shinobi. Then,
successfully complete the game under the normal difficulty setting.
Play as Joe Musashi:
Successfully complete a total of eighty eight missions in the game and collect
the Secret Clan Coins.