This was a fun platformer. There was a solid challenge that scaled up through the game. Level 11 was the hardest to get all three pieces, but that may just be me. I had to change the keyboard controls just for this level because it was painful keeping my hand crunched over up and right. This would be my only complaint, but allowing the player to change this helped. (Other players might try A & D for move, space for jump, and J for Dash if feeling stuck here.)
The sound, music and animation all flowed nicely together. So all around good job.
Possible bug: Not sure if is just me but I got all of the pieces for all of the levels other than 11. Once I collected the three pieces for level eleven, I could not click level 15 to open it. I had to go back through level 14 before I could enter 15.