Really interesting game! I really liked the concept behind it and the levels got quite challenging. One thing that bothered me a little was that when you wanted to put out a footprint it was mirrored, when I for example was turned to the right and pressed X the footprints were pointing to the left. Not sure if it was intentional or not but it would maybe make more sense to flip them :)
Other than that I really enjoyed the game and also got used to the flipped footprints :D
I don't know if you've heard of Game Development World Championship before (gdwc2019) but it's a competition for indie game developers where they can submit their games and it's free! It's great if you want some more visibility for the game and it only takes a couple of minutes to join :)