Hardest game you've probably played in a long time.
The game will make you wanna throw your controller out the window and cuss wildly in the sky. At the same time you're gonna love this game. You will never get tired murdering countless enemys and exploring, Finding Secret items and locations. Big boss battles that will kick your ass.
Just like any good action game. You have lots to unlock after completing the game and will get your moneys worth. I highly advise purchasing Ninja Gaiden 2 if you have a 360.
You get huge weapons, Small quick weapons, epic adventure filled with gore. Huge breasted babes running around. You'll feel like you're the most awesome ninja created and can defeat any enemy. That is after you die a million times and perfect the game.