I actually quite like the concept and the clean execution, but I feel like the game doesn't explore it a lot? The levels are way too easy at the moment.
There're also a couple bugs that I noticed with the games:
Music does not reset for restart, my god it gets loud after about 10 restarts.
The health bar is made from a long health bar and trimming it according to player's health, I notice this because there was a tiny bit that was poking out from the 6/7th health.
The first level has a bug where resetting does not reset the whole level, so you can break a wall, reset to checkpoint and walk pass the gap. I think this might be caused by the checkpoint because the rest of the levels works fine. Speaking of which, I don't think a game of this length needs a checkpoint system at all.