This is really well polished! The animations are pretty good, and the mechanic of swapping between using your character and the bullet keeps things fresh. It is too difficult for me though, and it took me two hours just to beat the ten levels (nothing better to do). Perhaps some more easier stages to help players get more acquainted with the controls and mechanics might have been nice. Overall, it is a really great entry!
You are one of the very few people that actually beat the game, you're awesome!
I totally agree that it needs more easier levels in the beginning to teach the player how to control character/bullet better.
Thanks for the feedback! :)