Hey, nice job with this one! It was a nice concept and I think there's a lot you can go if you want to continue on this project. I think a couple useful things you could do is have some clearer indication that you're supposed to fall down at some points, since I would usually jump right over all the gaps and then have to walk back after hitting the invisible walls. The hitboxes can also use some fine tuning, since on the final level I would try turning around and the shifting hitboxes would make me run into spikes a lot.