I had fun playing through this game, the concept interesting to mess around with, and there were quite a few clever setups.
My one major complaint with this game is about the moving lasers. I don't mind them as a challenge element, but sometimes, as it passed by a corner, it clipped the player blocks at unexpected angles, forcing me to restart from the checkpoint. The staircase at the end of (by my count) Checkpoint 6 was a particular point where I lost a couple times after completing the challenge of that stage because the purple layer swept through and killed me while I couldn't really see it coming.
Other than that, though, this was all around a well-designed and enjoyable game to play. Nice job!