The music is awesome and the art too! Beautiful story! Basiclly it is the reason why I joined this gamej am: so I can force me to make a small project. I think maybe everyone of us had this problem once or more.
Small tip for the next time you make a plattformer: I would add a Physics Material without friction to the player and instead type in a higher value for linear drag in the Rigidvody2D-Component. That prevents you from getting stuck on stairs like in this game.