Posted these comments on Discord, but I'm reposting here in case those are taken down. Apologies for the long text bubbles.
Nice short experience, from what i played. The 'initial' camera sensitivity feels a tiny bit small for my liking, but there is a setting for that, so that isn't really a problem. I like that the combo system rewards using different moves, and things such as the projectiles being deflectable with a block. Making health being regenerated as you deal damage to encourage aggressive gameplay was a nice touch. I think I hear a small sound to telegraph enemy sword swings, but I would prefer if it was louder, so that that way it is easier to tell when to block. This is especially nice if you can block while 'surrounded' (I haven't experimented enough to determine if this is the case or not). Making the fellas that shoot fireballs taunt you afterwards is also a nice and charming touch.
The wall climb is also a nice touch. Pretty easy/intuitive to trigger, since you just need to adjust where you are looking, yet also constrained to keep the player from climbing up entire skyscrapers (I'm about 90% sure it is time based. could see a lot of combat potential in this, especially based on the challenge rooms)
The only part of the game that is a bit buggy to me, is the text boxes. The actual text inside them is pretty nice, and using capitalization or alternate styles to emphasize words and emotions is cool. But I had a few times where the dialogue box would freeze/wouldn't let me continue, which required me to restart the game, including the first time I got the axe. My guess is that this is due to a value or state switching at the wrong time, or the same input being read twice, leading to the textboxes getting stuck. It might or might not be related to the ability to make the text show up if you press the button again, while it is still writing (which is a nice feature). (edited)
I think there might also be at least one set of doors where if you enter it, you are left facing the door you just came from, which can lead to confusion or loops where you enter a room, forget to let go of forward, and then run back into the room you just left.
Still, very cool game, and the challenge room idea is pretty great. Adds some reward for exploration without making players that just want to unlock more movement upgrades or the next ability wait.