I wish you could hang on the tether and aim throwing the shuriken simultaneously. It would make some of the jumps a lot less punishing.
I like the concept a lot though, and the tethering is really well done. The ground movement could be a little smoother, but it seems a bit intentional because of fast you can pick up speed through other means. I had a lot of fun with the mechanics even though i'm bad at it. lol