nice work! Even without a clear way to "win" it still has some nice gameplay & artwork. The music for me stop after the song finish, so I was playing in silence for a solid minute, but that should be an easy bug to fix! Also, I think it would be smoother if you could aim with the cursor and shoot with the left mouse button, instead of "e". Just felt a little weird playing it that way. Otherwise great job!
I'd appreciate it if you could play/rate my game as well! :)