Hi,

I ran the game for the first time today and found to my dismay that there is no in-game option to invert the mouse y-axis. The game is unplayable for me at this point.

I'm so used to the inversion that the uninverted configuration makes me giddy, especially when playing in first person view.

Are there settings I can tweak to work around this, or patches in the making that adds this option?

It appears that there is no option to invert y-axis. There might be some third-party app that can do that, I don't now.

In the game's folder there is a config.ini file where you can set the option bCenterMouse to:
1 - the cursor is fixed at the center and you move the view by moving your mouse (it's default);
0 - the cursor moves freely across the screen like in the main menu and you change the view by touching the edges of the screen. I tried this option, but it's buggy.

Maybe this option would be better for you. I, too, get dizzy and sick playing this game, but in my case I think it has more to do with the combination of the overall smoothness of graphics, high FPS and FOV.