I appreciate you enjoyed the game even when you're not very good at it, I can relate 100% (I'm looking at ya, Bullet Hell Monday XD)
Thanks for the feedback on the art, audio and gameplay, plenty of thought was put into that. I think the many bullets on screen can be because I didn't update the rigidbodies of the bullets, I moved their transforms directly instead and, for some reason, updating them in the built-in Update() didn't cause any performance issues.
I thought the self-extracting .zip would be easier to work with, it ended up being much more frustrating than I could predict XD
Thanks again!