Very cool game.
The character not stopping very fast looks neat and feels neat until I fail to stop in front of a trap at which point its frustrating.
Dying was kinda slow, there was a pause before the respawn menu and it takes a moment to move my mouse to press repsawn (maybe pressing space would repsawn you).
Also, (nitpicky) the music restarted when you respawned. It would have been nice if it kept looping.
The music is very nice and fits the mood very well. I kinda like that fact that its only piano and woodwinds. Each piece of music can be made distinct but since they all share the same (or similar) instrumentation, there's a coherency to the game's soundtrack as a whole.
The artwork is simple but still aesthetically pleasing.
The puzzle design is genuinely fun and I feel clever figuring it out.
Overall, very great game. Genuinely fun. I will be surprised if this doesn't get at LEAST top 50.