The visuals and the ambient sound really set an atmosphere, I think that's what I enjoyed the most from this entry. Your game has the weirdest dash I've ever seen though, and I could never really get used to it: first your character jumps at 45 degrees, then boosts up at the end of the arc losing all horizontal velocity... It made it really hard to anticipate my jumps, and it got worse with the crystals.
It is still very impressive, good job!