Great looking game, I like the subtle animations and all. Music gets really repetitive, but that's kind of the way it's supposed to be in games like these :)
My problem with the game is that there is only one, simple mechanic in the game, and that mechanic doesn't always work that well on certain levels. I'll try to explain. For example, I spent a lot of time on level 9. The up/down-moving platforms moved just barely above the static platforms, so I had to time it perfectly to even get off the up/down platform. More often than not I'd press too early or too late and just bounce back and forth. It was really annoying to not even be able to get off a platform. I understand that this is done to make it more difficult, but remember that - and this is a really good rule in general - the difficulty element of a game must never be annoying. I'd recommend letting the up/down platforms move further to let the player move more freely, and instead put in stuff like moving spikes to increase the difficulty.
Anyway, I see that I'm sounding very harsh right now! :P It was a really good game, but with slightly better level design it would have been amazing! I'll look forward to seeing more games from you in the future :)
Good luck next game jam!