This, this was fun. You had a good difficulty curve, at least in my experience. The final boss was hard, but with enough trail and error I was able to beat him. This game really reminded me of celeste. Over all I think you did a great job!
Just a small suggestion, try using a tilemap next time, it will make all the tiles connect nicely without any seems.
Apart from that, great game and super fun! Congrats! :)