I love this game, I play it all the time, but i'm giving it a 4 Star.
Some bosses are exploitable, like Robirdo.
This game is really fun though, and beating all the bosses is a cool challenge.
Your game is amazing, but it could certainly improve!
(P.S Doubt you'll read this but thank you for your game, it has been part of my childhood, when I was 9.)