This looks very promising!
I tried playing on Linux with Wine but got black screen with UI on top (stats, cross-hair) although the intro worked just fine. Not blaming anyone, just tested my luck :)
Oh, damn. The next demo will have a Linux build as well.
Maybe try changing the type of anti-aliasing?
I had anti-aliasing disabled. It's good to hear a native Linux version is coming, I will wait for that!