Beat the game last night, I loved the art design, the combat was okay once you learned that the most effective way to deal with enemies was "avoid them, retreat and see if they lose interest and crawl away into the walls", I only ran into a couple instances where I needed a walkthrough because I got totally lost, and the ending was pretty abrupt and nihilistic (and I'm not sure how I feel about that yet).
I preordered the art book for the game as well.