It's fun as hell, and hard as hell. Anybody else play it?
It's like God of War only you're a much less controllable Ninja and normal difficulty is like hard in a normal game. The voice acting is horrendous but the story isn't awful so far.
One of the most annoying things ever though is that when you die, it will sometimes say "Do you want to continue" and place the cursor on Yes. But then other times it will ask "Do you wish to abandon the path of the ninja" and puts the cursor on Yes, and if you aren't paying attention and mash X then you end up back at the title screen! What kind of backasswards programmer decided that was a good idea?
Also, I'm playing it on the Vita, no noticeable differences though, other than some touch screen aspects which are cool and a good addition.