I'd say that they've implemented the Arkham combat about as well as they could. It's obviously a lot more simplistic than the other games, but the physicality of it makes up for it being a lot easier in terms of inputs. Builds up quite a sweat, if you do it the way you're supposed to
Predator mode is particularly well done, though. Very much feels like the old games in terms of traversal and stealth mechanics.
I really do think this could be the game that proves you can do a full length, decent campaign in VR (not that this wasn't proved with Alyx of course). It also shows how lazy VR devs have actually been for years. The fact it's taken this long to give us something like this is ridiculous, especially when you consider how limited the hardware is for this game. PCVR should be leaps and bounds ahead of where it is right now. If VR has a future, it's going to be games like this that give it one.