Finally got it tonight, been working at chipping it away. I think I've done four bosses in four hours, maybe a little less, which I don't think is bad. So far, the stages haven't been too bad, Plug Man's was the worst, but I'm on Tornado Man, or whatever his name is, and the spinning platforms are, to me, harder than the platforms. I'm calling it a night.
Galaxy Man, or Space man, or whomever, is easy.