I wish the writing was of the same caliber as the presentation. It's not bad, not at all, but it's the weak link in what is otherwise an incredible game.
There's a brief flourish of voice acting that I want to note. It's almost trivial in the full scope of the game, but when you first grab a pebble and it starts crawling up the wall, the protagonist lets out this spontaneous laugh of delight, and it struck me as one of the most authentic depictions of an emotional reaction I've ever seen in a video game.
My only other nitpick is the climbing gear. The rope physically interacts with the environment, but not the character's body. Same goes for the poncho and how it clips through their waist. It kinda betrays a lack of polish that most of the rest of the game definitely doesn't have. Minor quibble, and probably too costly a technical challenge.
Fully my surprise game of the year.