This game has one of the strongest aesthetics I've ever seen in a game. It just grips this absolute overpowering mood, set by the gorgeous visuals, music (crafted by Disasterpiece), and lack of any words whatsoever. Almost everything you learn about the world is told through the environment and vague picture snippets from NPC's. It has a fascinating air of mystery that I have yet to be able to solve.
The gameplay is also fantastic. The way they implement the boost system, one of the game's main combat and traversal mechanics, is super satisfying to chain and master, and opens up a ton of mechanical depth into the game. If you like fast paced action combat with a strong atmosphere and world to melt yourself into, I can't recommend this game enough.