Seems all right but I had some trouble on linux. The animation between the levels is very smooth, and it's fun to learn the new techniques to use. I bet it's a blast to make these levels.
I really like the pixel art aesthetic, and considering the controls you should not have any trouble targeting mobile with a twinstick control overlay.
I also want to complement you on your choice in colors, because the pink and green contrast crisply with the other art.
Great demo!