Nice game, it can get pretty chaotic at a certain point. Just wish there was some audio to add it as well. Some things to note:
- When the bullet fires, I can sometimes get damaged by walking forward into the bullet accidentally. I would suggest that you only make the bullet start to damage the player once it loops through the stage;
- I didn't understand at first what I had to do, thought the star was an enemy, just by reading the game's description I realized that you have to collect it. Try adding some visual feedback such as a light to make it more evident;
- Some hit feedback on the enemies would be nice. Visual and sounds can really enhance the experience.
Overall, keep it up!