The animation was indeed wonderful.
The graphics were very nice and nearly at professional quality. However, the mouths and eyes let the artwork down a bit I felt.
Also, the voices could have been recorded better, but I understand that that could be out of your control.
Also, the story did seem a bit derivative - great stuff compared to the usual fare on NG, but still standard stuff that I'd seen explored too many times already with nothing in the plot to really make it stand out.
However, the fight scene was incredible - definitely the best part of the movie.
I suggest that next time you maybe start with a bit of action to get our interest?