Godfall supports "windowed," "fullscreen," and "borderless."
Support for non-16:9 resolutions is poor. On my 16:10, for example, the game screen extended beyond the edges of the monitor, so many UI elements were out of reach.
There is no artificial FPS limits, V-Sync can be disabled completely
For graphics quality, there's "Low," "Medium," "High," "Epic," and "Custom."
Anti-aliasing is only available in "Low," "Medium," "High," and "Epic" as well, no details on the algorithms used.
Motion blur can be set to off.
AMD FidelityFX LPM is supported according to the menu, but it has no effect on FPS or image quality—it may just be bugged.