The game is all round great. I love the cute and simple art style, the level design is pretty good, and the mechanic of exploring to discover your path is a very nice touch to a game set in a cave like place. However, there are two downsides to the game: the music was very robotic and harsh. It did irritate me a little towards the end, but it did go well with the vibe of the game. The movements are also like ice. The platforms themselves are small but the add speed and slippery-ness of the player's movement made it more difficult to move around, especially on the ascending green stairs. I can tell it requires skill, but it does not make the game unplayable.
So overall, great job. With some fine tuning and a better soundtrack, this would be considered a complete and great game!