None of the tinkering methods are really accurate.

I did 2 main fixes

To get the game running: install lib32-nvidia-utils-beta (lib32-nvidia-utils if on stable proprietary drivers)

To have the game launch fullscreen on the correct monitor:

1. Start the game
2. Go to option and change it to window mode
3. Drag the screen to the monitor you want the game to be on
4. Minimize the game into the task bar
5. Bring the game back to the screen by clicking on it in the task bar
6. Go to game options and turn full screen back on
7. Save or apply setting (if needed)
8. Restart the game- and it should be good now