Nice game. My feedback -
Art Style - I love the monochrome dark (limbo style) colour
Music - fits the game (maybe the pops on jump should be a tad louder)
Controls - The jump mechanic maybe needs some gravity tweaks to make it more 'jumpy'
Trail effects - The white trail behind the player feels abit off. I would have put a glow instead of a trail.
Overall - quite pleasant to play. Good game. Well done!
Check mine if you feel like :)