I really liked the level designs! They expand upon previous mechanics while providing new challenges each time. Also, great attention to detail with the settings menu and tutorial! It added an extra level of polish.
My only problem was the lack of contrast which made many elements blend into each other. It made especially the later levels difficult to see how to navigate Given the name of level 10, I did get that it was partially intentional, but I found myself squinting to figure out where to go LOL.
But other than that, it felt polished and well-made!