Hi! Thanks a lot for the detailed feedback!
Yes, playability is still a WIP, specially in web the controls got stuck from time to time.
Multiple enemies, waves and difficulties are planned in the roadmap. I want the game to feel a bit chaotic and bullet-hellish, so I'll need these for sure!
Weapons and stats will upgrade and change, adding also new ones, as you progress the game. Think about Binding of Isaac but with ships.
You got a point with the bullets, I need to think how to make them different from the ones shot by enemies.
I'm glad you liked it and thank you for playing!