Too many bugs: I suddenly started being immortal, I couldn't die. It was like I had infinite lives.
The battle scenes: The so called battle scenes is not play-able. It's god damn difficult!
Animation and drawing: It's bad... each character has like 1-3 frames. (Shooting, walking, flying). The drawing is also poorly made.
Needs more features: It's getting boring very fast because of that. Get some more shootings, other enemies etc.
The flying: Because of the flying, there's no reason to walk. You can just walk through the levels just flying, you don't have to kill enemies mostly because of that.
Music: It was good, not amazing, but good enough.
You can do better bro, much better!