Ninja Gaiden II/Unlockables

Costumes
 Black Jaguar - Complete the game on Path of the Mentor. Camouflage - Complete the game on Path of the Warrior. Dark Blood - Complete the game on Path of the Acolyte. Golden Ninja - Complete the game on Path of the Master Ninja. 

Difficulty Settings
 Path of the Mentor - Complete the game on Path of the Warrior. Path of the Master Ninja - Complete the game on Path of the Mentor. 

Game Options
 Classic Film Filter - Complete the game on any difficulty.</li> Music Test - Complete the game on any difficulty.</li> New Game Plus - Complete the game on any difficulty. Loading a finished game allows you the option of playing a New Game Plus, which starts you off with everything that you accrued during your past game except for quest items.</li> </ul>

Gamerpics
 Gamerpic - Collect all Crystal Skulls</li> Ryu Gamerpic - Complete the game on Path of the Master Ninja.</li> </ul>