Cool game! I really liked the concept and it did get pretty difficult at some parts. The music and art style fit perfectly together and overall this was a very enjoyable experience, keep up the good work :D
I don't know if you've heard of Game Development World Championship before (gdwc2019) but it's a competition for indie game developers where they can submit their games and it's free! It's great if you want some more visibility for the game and it only takes a couple of minutes to join :)