As I agree with most that was already said about the game design (I haven't even gotten through the second electricety stage ;D ), i would like to say that I really liked the art of the game! I normally dont like pixel art, but probably the really simplistic (even retro) approach made it really work for me, great job! Another game design aspect though, I was missing a bit of hit feedback. I just didn't know if I was damaging the boss (that or i just didn't hurt the boss, also a possibility xD)