Played Batman: Arkham Shadow for about an hour. Can confirm that it feels like a full-fledged Arkham game! It's very fun to poke around the environment, the combat is surprisingly good and gadgets feel intuitive to use.
It's definitely one of, if not the best VR game of the year! Camouflaj set a very high bar for Metro: Awakening and Alien: Rogue Incursion!