I'd couldn't even imagine VR had THAT much potential. Everything works as it should.
It has physics but only on objects that requires it, so no grabbing a whole table by mistake.

The graphics on a 2D screen looks nice, nothing from other world, but when you are INSIDE the game... maaan, they look gorgeous.

The animations are sooo good, specifically on the combine machines. Those are almost at Marvel level with Iron Man.
And don't get me started on the HOLOGRAMS! These look so real and mind breaking with its Non-Euclidean geometries and colors.

The lore within the Half-Life universe is incredible!!! A MUST TRY for any fan.

10/10