Very cool concept and a surprising amount of enemies that all seem well thought out and cleanly executed. At some point though, I got a little bored of running in circles. I think it could have been better to have some form of obstacle that requires you to not just run in circles but I'm not exactly sure what that could be. Also it would be nice to have in indication of how many rounds there are so that there's more motivation to get to the end. I made it to round 17. Also it's very pretty. Good job!