Excellent game!
I preferred the boss side of the game - strategising around cooldowns, and keeping an eye on the surprisingly good ship AI!
It did take me a couple of failed runs as the boss to spot the invisibility/health skills on the right, but once I noticed them it became a lot easier. Well balanced on the boss side, though I did terribly as the good guy!
I love the music, and the 1-bit style! It looks fantastic. I really enjoyed watching your behind the scenes video as well :)