The concept and the art for the game were super. I agree with some comments that it wasn't clearly explained as to what the controls are. I figured them out, and that process did feel like a puzzle game--but other people might want a good tutorial to explain it.
The UI really did take a while to load. Same for the level completion to trigger; any particular why it felt slow? The game itself has a nice pace, so those slow transitions can be jarring.
Anyways, it was an excellent game. I am going to keep an eye on all the work you put out in the future.