Really fun game and good take on the theme!
It was fun having to time my movement, because once the tether was gone you'd go full speed again and I would run right into projectiles. It was fun to have to play around that.
The movement feels super polished and well done. The art is also very well done!
My only complaint was that it was relatively easy to stay alive. I'd prefer to only have three or maybe two hearts. I got to 40 before I decided it was time to move on.
Overall, really good job!