Glad to see more people Count's going down type games!
Artwork looks really great, and all the little flavor with the fire, falling chandeliers, and clouds was really fun.
The wall walk was an interesting mechanic. Really fitting for the theming, but it kinda felt awkward to play with.
I think a lot of that had to do with the key switch that had to happen to do something. I'd need to jump off the wall and continue to the right, so I'm trying to switch from wall walk -> jump and right, but if I hit right before I hit jump I wind up just falling to my doom.
It also felt like my jump horizontal distance was very much based on how much of a running start I needed, which seemed to need quite a bit more runway than I was expecting, so some of the long horizontal jumps felt really inconsistent.
This led to the game feeling hard, but not quite in the 'fair' way the really tough platformers often shoot for.
There was a general feeling of being unable to do something consistently, but not really being sure why.
That could just be my skill level or acclimation to the game. But one thing I noticed was that there was never really a place where you could get used to how the jump felt, things like distance, height, fall speed. The game is run from the very beginning and I wonder if that hampers the learning process. You never have a place where you can clearly see "that's how far I can jump" and the like.
Just some food for thought.