Pretty cool to have to characters with different movement mechanics tackling the same level, that was fairly unique. It would be nice if for single player you could press a button to switch which character you are controlling. Lack of coyote-time feels really punishing with the human character, it's really easy to have your first jump eaten so you don't clear a gap. I also wish it didn't reset the whole level when one character dies, and would just reset that character instead, but maybe that would make it too easy.
Over all I think the idea is really cool, but maybe some numbers could be tweaked to make the platforming a bit easier or more consistent. Nice work!