I found it a little bit inconsistent that the exit is sometimes very close to the spawning spot and some other times it is 20 seconds away from it. I would prefer it if was, for example, 15 tiles away from the start in level 1, 20 in level 2, and so on. And the maze sizes escalate too quickly, I think it would be better it it incremented only by a little, so the player would be able to solve more mazes before running out of time.
I liked the shadow effect. It creates some sense of depth, with reminds me of Ape out. It is also funny to me that the UI elements are attached to the player during the game, because I did the same in a past jam when I didn't remember how to fix the element's positions and I was running out of time. In the end, what is important is that you could get the game working and submitted it, well done!