Underboss
I just realised why I don't like FPS VR titles, they are just jazzed up duck hunt!
The original Quake is a blast on Oculus Quest 2! You have to mess around with sideloading and add the HD and NIN music files separately, but after that it all works great. The monster models look a bit basic but the gameplay is pure fun. Not bad for a game released over 25 years ago.
Original Half Life is great on the Quest
You can get Doom, Quake2, Return to Castle Wolfenstein, Half-Life and Doom 3 too. All excellent source ports, though you do need to own the original game (say on Steam or GOG) to get the game data files from.
Do these old school games actually work as 3d? Or just 2d within VR?
The first person shooters mentioned (Half Life, Quake, Quake 2, Doom 3 and Return to Castle Wolfenstein) all place you in the 3D VR environment. Plus the fact that you actually install and run them on the Quest 2 means that there is no messing around with cables or WiFi when you play them.
Triffic. Is there a guide as to how this is all done? I don't actually have Q2 yet - planning on getting one very soon.
You need to head to https://sidequestvr.com/ where there are installation guides and software for the various games e.g. https://sidequestvr.com/app/353/quake2quest.
Dr Beef seems to be the hero behind much of the conversions.