I've just updated the demo right before the Steam FPS Fest, fixing a few bugs and enhancing the first open area to make it more compelling and interesting to begin with.
I've also added more graphics quality settings to assist players with low-end devices in enjoying the game.
Coming soon: windowed mode and custom resolutions.
In late April, I will implement full control customization.
So, play the new and updated version of the demo and have fun!