Unlock Joe Musashi
Finish a total of eighty eight missions in the game and collect the Secret Clan Coins.
Insert a memory card with a saved completed game from Shinobi. Now Finish the game under normal difficulty.
Alternate Hibana costumes
Finish the game under normal or hard difficulties. A different alternate costume will be unlocked under each setting.
Alternate Hisui costume
By collecting every one of the 88 Secret Clan Coins in the game.
After finishing the game under easy difficulty.
Use daggers to attack. After you kill the enemy, Stealth Dash once, then attack. She will do the dagger attack again. Continue dashing and attacking and it will look like she is dancing.
Stealth dash tate
Slap four or more enemies down. Lock on to last enemy or Boss then Stealth Dash attack him. This is a good way to kill Boss 12.