I felt good with the mechanics until the double jump. There was inconsistencies in the jump registers. I could double jump quickly, or not at all. Therefore, I felt like I didn't have complete control of the character.
Overall though I like the direction of the game. Would play more if continued : )
Thanks for your feedback! Guess I didn't test the double jump enough :P - Technical Note: the jump is all handled by physics and that might cause some weird things that are harder to balance and fix, in a future version I wouldn't use the engine's physics.