Really great game! It was fun to play and the music was fitting. I wasn't quite sure where to go as there were so many routes to choose but I kind of liked that sort of free exploring in a 2d platformer. Overall a very fun and challenging game. I did walk into the boss room by mistake as I explored the map and I was not prepared :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 :)