It's pretty good, but it would have been good enough as a non-VR title. The thought of digging out my VR headset to play it makes me shudder. I never even managed to finish it, played through most of it and then couldn't bring myself to get my VR headset out again.
I think without the VR-bait parts like the starting room I would consider it to be the worst Half-Life game. There were some people trying to make it run without VR but I don't remember how far they got.