You have some fun controls (there's a bit of dead time at the end of a dash that can make it feel slow though). I'm not too fond of having spikes everywhere and was very frustrated because I didn't understand how to beat the orb at first (and you wouldn't tell me how!) and I had to restart from start many time. There's a bounce to dashing into walls that I wish the levels made more use of! Or just allowed it more by having some non challenging part to play with it. Now I could barely ever bounce into anything without it being life threatening.
So overall, the game is good, the ending is good, but the level design could be vastly improved!