A whole mega-man-style level? damn! As I was playing through this I kept telling myself "there's no way he also made a boss", but of course there was. The level design was well thought out and lived up to it's genre. High marks for this game.
My one gameplay suggestion would be that near the beginning it might have helped to have a jump that you could only make by dashing. With dashing only being introduced to get you through "tight spaces", I completely forgot about it as a mechanic until half way through.
Also this is one of the more polished games in the jam, but I think people might overlook it because the thumbnail doesn't show off your game enough.
Anyways, well done, and looking forward to your next entry!