Ninja Gaiden: Dragon Sword Cheats - Nintendo DS
Artwork - Beat the game once.
Hard Difficulty - Beat the game once.
The Way of Kunoichi
To play through the enitre game as Momiji, select the hard difficulty level, survive the fight with Ryu and successfully defeat the dragon boss. A new difficulty will be unlocked - The Way of Kunoichi. Start a new game to access it.
Unlock Muramasa's prize shop
Beat the game once on Normal to unlock Muramasa's prize shop.