I refuse to believe this is a demo. Yes, it's short, but it plays so solid that there's no way this is only a demo!
Okay, focus on the review. The concept of this game is pretty straight forward, but the complexities of having to calculate moves while not getting hit makes this as much a puzzle game as it is an action game. The graphics are stunning; the amount of detail and quality of the models is very impressive. The sound effects and music are great, the controls obviously easy to learn.
Good luck on funding, I think this game's going to be a hit!