Have you looked at the Shadow Steak Buff? it changes te min and max exposure to allow for a kindof “night vision” you might need to see how the scuba goggles work to maybe apply that “green layer” or “desaturated look (everything black and white)” depending on how you want the night vision to work.
As for the fog, etc. Sorry, maybe if you can figure out the layer, while you’re messing with the render stuff you can make it like a IR or heat-sensitive scanner and have living things show up/render even in the fog. But that’s stuff I haven’t been able to reach yet.