This started pretty well. A dude with a home made rocket tests it by jumping off a tall building. That's a pretty good story, whether he learns to fly or ends up as a big hole in the ground.
But then he decides to whale on some hapless passerby. WTF? Most fight movies at least try to justify themselves, by having the underdog win, or it's some sort of staged fight, or the loser is painted as 'bad'. This is just pointless glorification of violence. The other guy doesn't even try to fight back!
You've got the animation skills. This could have been something so much better.