He..cheated?
I didn't notice him cheating. Did I miss something horribly obvious? Because, really, if it's the premise of your whole movie, it should be fairly obvious that it actually happened. As has been said several times before, you do need to speed the action up a little. I wouldn't want to see your movie start, a bunch of stuff zip by, and then it ends. However, watching a punch come at a guys face long enough for me to go to the bathroom and come back is really stretching it. What may be a nice idea is keeping the speed the same just before the impact of a punch, during, and right after. But while the sword is flying off, for example, the animation would speed up. This would be stylized and interesting, but also keep the audience from getting bored watching a guy fall for ages. The "random" joke at the end was cute for this kind of movie. But if you are trying to express anything more than little compositions of geometric shapes fighting each other, you will want to avoid completly unconnected humor of that sort. Unless I am missing anything. And that's about it for the critical stuff. This was an incredibly awesome first-time movie and I wish you all the luck with your second :D