I like the art and music. Each level pretty much only has one solution, so even when you know that, the next aspect would be the timing alone. It's less about solving a puzzle at that point, and more just about reaction time which is harder to brute force. Sometimes I find the solution by accident which can be a relief after so many failures. Even so, it's not very punishing. I think this game is good at stepping people through a wide range of platform mechanics in a delightful way. I like that there is a heads up that there is a half way point, but I would have liked to see as I play the game, a label for the level I am on.