The low score Mario game sounds kinda fun. I'll have to try that sometime.

I finished Shade Man's stage in MM7. First one I can recall in the series that had a scary theme, with robot bats, robot undead, etc. Shade Man was a bit tricky, even if his attacks were a little simple. He would mostly fly to the top of the screen and suddenly swoop down. If he made contact, he would carry Mega Man up in the air and drain MM's energy to restore his own health. He had another more normal attack where he'd shoot out sound waves or something. But he rarely ever did that. And even with the weapon he was weak against, it was hard to hit him and still avoid getting hit by the energy drain.