The art is really good, and the music is as well. But there are quite a few problems with the gameplay.
The biggest one is that you have to rely so much on memory to get by. You have to remember which platforms are where, and where the enemies are. I know that you can throw you're torch, but I just ended up throwing it into down the void most of the time.
The movement itself works, but it is very twitchy and the jump feels pretty dead. It is totally acceptable for someone creating their first platformer. GMTKs video on celeste gives some pretty good info on how to make a platformer feel responsive but not twitchy. If you want to improve the jump I think board to bits has a video on it titled something like four lines to a better jump.
The hitboxes feel to big. Especially for the player.