Prometheus Wept is a party and action point turn based RPG set in a near-future, post technology Earth. The game offers hardcore squad-level combat, meaningful choices, deep character progression and an advanced crafting system. It is currently in early development, and is the third game by Timeslip Softworks, the developer behind Vigilantes.
You can choose to delay leaving with the food convoy until morning, to remove the risk of being ambushed at night.