Ah, ok. Playing the original Half-Life in VR is great for the nostalgia value, though probably not that great if you're not familiar with the game itself. There's a bunch of great VR ports of old games for the standalone Quest by developers calling themselves "Team Beef". Doom 1, 2 and 3, Return to Castle Wolfenstein, Quake 1, 2, 3 AND 4, Jedi Outcast, Jedi Academy... the original Tomb Raider is coming soon too.
The real draw is to see those familiar game worlds from a new perspective.
Well, depending on what VR setup you have I can either help you set it up or it might be impossible.
Portal 2 in VR runs on a PC (a pretty good gaming PC) connected to the headset either through a cable or wirelessly. If that's the setup you're using, it shouldn't be too hard to figure out.
If you have an Oculus/Meta Quest and only play standalone (that is, no PC is involved, everything runs on the headset), then I'm afraid that's not good enough for Portal 2 or Half-Life 2, though there is a VR port of the original Half-Life. All you'd need for that is any PC (even potato quality) and a USB cable.
This is what I hate about Star Wars lore. Same with the parsecs gaffe (I think it's even pointed out in the screenplay that Han is transparently bullshitting them).
Both of these make sense, but no. They had to make super convoluted explanations in secondary sources and everyone treats that as gospel for some reason.
Does talking about dicks make you uncomfortable?