A good game overall! You got your tools first then made the levels, and this will take you far in game development, since it's the most common path for puzzles or platformers, but generally this logic is essential for scalability!
I second what TheMageRealm said, check that you can move the platforms even after hitting start. Do what you think you should do with that information, be preventing it while the bat is in play, or allow it and make puzzles around it.
I wish it had more "seriousness" on it, but I already like t he game for what it is.