Really nice looking, great shaders and graphical style - hands are really well done and the subtle push back when interacting and pushing against things is really nice. I'd say the reflections were a bit too sharp, personally I'd add some smoothness in there to make them look more realistic.
I felt the audio was lacking some ambience sounds, so a constant low-level engine noise, or some incidental background noises. It seemed odd when sound fx and voice would suddenly come on, then silence for the rest of it.
The on-screen HUD is a little hard to read, personally I think I would've preferred that as something to read in the world, or as a wrist attachment instead of being fixed to the head. It serves it's purpose, but it seemed a bit too intrusive being there all the time.
Also, I would have liked to have the option for snap-turn, the low-gravity and smooth turn was a little sickly. Unfortunately, I didn't finish it as the low-grav and the navigation was a bit too sickly for me.
However, the map is a cool addition and I especially like it when it appears/disappears when in proximity. The game itself has a great atmosphere and great VR scale of the world. I enjoyed playing it, and it was a shame about feeling queasy after a while...