A very solid entry in the series, but not my favorite so far. A lot happened, that's for sure, and I think it did a good job setting up for the next book.
Has basically everything you would want out of a litrpg book, including actually interesting well-developed characters. Even the small side characters feel fully developed.
Some very strange sensibilities. Slow paced and sort of bleak, but it's very atmospheric. Definitely good fall book (maybe late fall heading into winter).