controls work well enough, it just takes getting used to.
pretend you are playing MM2 on an NES controller, but the screen is in the middle of the control.
the slow mode makes up for control troubles, since it slows down everything's movement.
you can also play portrait style, which feels like playing mega man on an old school gameboy. I like landscape style better because the "dpad" and "buttons" are farther apart.
like I said, there is a MM2 Lite, so check that out before you buy the full version.