This War of Mine: Final Cut

You need to survive the first week of the game. This should be incredibly easy since the only ways to die during this part of the game are starvation, sickness, combat, and dying of untreated wounds. Freezing is an issue for later. None of those should happen in the first week, and they're all fixed by simple means. Just don't pick fights and keep all your people fed and treat sick people with medicine and you should be all good.