Very cool hook idea!
- Overall: The game was really neat.
- Fun: It was a lot of fun to think about were the bullet will go and also going to collect it again. Very good hook idea!
- Visuals (Graphics): Nice and clean! Perhaps don't let the particles shrink into nothing, because a few times I died to invisible particles hehe.
- User Interface: Great start! Can improve more once the game is further along~ Maybe a cool over-world for the level select.
- Audio: Great start as well!
Keep it up! I think the collecting your bullet after shooting is a great hook you should keep exploring :D Please check out my game when you have time.