Fun!! I struggled a bit just due to general lack of platformer skills but this was quite fun! Saw your comment on the main page about a full version, that'd be really cool! 

I also recorded my gameplay, your game is shown from 10:59 - 12:14 :) 

I really like this. It's pretty short but a complete game all the same. I would highly recommend jump buffering and coyote time for any platform game, and some camera look-ahead would go down well as well, but given that this was done within 3 hours I'd say you've done really well.