Just took my first break from the game, will be going back in around 15 mins or so. A couple observations:
- Smooth loco has clearly been tacked on. There's no smooth turning, and "jumping" is basically a teleport. There's multiple scenes where they essentially teleport you from one place to another (say, going through a tight space)
- Lack of physics a la boneworks hurts the combat. The fps controls are fine but not amazing, for example I often have to reach for a mag 2/3 times before Alyx actually grabs it
- Had a really strange bug with my left hand where I couldn't grab or gravity grab anything. Restarting the game/ steamvr doesn't fix it, you have to reload a save.

That said those are (mostly) minor nitpicks, I'm having a lot of fun with the game