I wish I could make it fullscreen. I like the art and I would like to see more of it. I would like to be able to reset the loop myself, it often happened that I knew I couldn't make it to the exit but I still had 7 or 8 seconds left and I just had to wait for it to count down.
The levels are very tightly designed. There is often less than a second of wiggle-room, which is good. The art is great to look at, good choice. There was a good gradual introduction of new mechanics.