Loved the music and the art style. On the other hand, I'm not a big fan of the ''icy'' movement of the protagonist and the placement of the doors (it might be intentional, but some door warps are very weird). I think that this has great potential of becoming a very good metroidvania. In addition, as a music composer, I must say that the main theme is a certified banger! Have you considered adding SFX to the gameplay?
Good job!!!!!