Yeah, I honestly can't say enough good things about this. My jaw actually dropped a bit when the intro started playing -- it immediately just looked and felt so far beyond "jam quality". A really good game -- just like everyone else said, great visuals, great controls, and I really liked the level designs. I'm super impressed. Everything felt really cohesive, visual/audio/gameplay-wise, including the little book organization puzzles (which is really something, because they seem like they should be out of place in a platformer, but they fit great).
I definitely got a sort of "huh, seems horror, but I'm probably dreaming, so let's go check it out!" vibe while playing, and then the ending came, and... aha! Also, the wizard's speech was a little too real... ;-;
If I had one issue, it would be that the controls were super weird to me; I know it sounds silly, but for some reason my hand kept getting the jump/dash buttons switched up, I guess out of habit from other games, which made the last parts kinda difficult. Having them be rebindable would've been nice.