Very good environment work, the setting and the concept fit very well together.
It seems as if the game is mainly a resource management game and for that I think a longer game is needed. The basics are all there and avoiding a "sanity meter" is a good choice I find.
I my mind some different locales with with different outcomes for scavenging, industrial areas giving more coal but less food, city centers would give more medicine and chocolate but no coal and only little food, with open land giving the best chance for foraging food and finding a little fuel but only a small chance of finding "luxuries".
But all in all this was an interesting, if short, game. The progression you are making in your games is impressive and I look forward to your next.
The game reminded me quite a bit of "This war of mine", I am wondering if that is on purpose or accidental.