It's a basic platformer that explored three unique mechanics in a short, logical way. Some moments are tricky, but that's not a real problem for a game this short.

The artwork is an afterthought, but can be easily improved.

I especially liked the mechanic for the ice level. Good job!

Few spelling mistakes.

Crashes before getting to the game on Linux. Console log: http://pastebin.com/RdLWg8by.

If you want, pass by the IRC and I'm willing to test new builds.

Simple game everything works. I would advice you to make level background more contrasting to actual level. Also levels feel empty only 2 thing were interesting last jump when clouds where your obstacle and in freezing area jumping up on small platforms. I would suggest more interesting levels like alternative paths to some buttons that will open main path or labyrinth in that you can lose your path. If art isnt your knack try game play and game mechanics.

Classic platformer concept, but I like the steady increase in difficulty and the new elements that come with each level. What's really great is the way you give each level a consistent theme, including graphics, audio and mechanics. It makes the game pleasant to play, even if the physics don't feel quite right and the level design itself isn't the most interesting. And of course, there is not enough content to make for a full game right now, but there's a story, a nice intro, three levels, and an ending. I'd say that's a success for your first entry! :)