nuclear winter

Snow all over the earth - snow and ice everywhere.
There's almost no food or people left, and if there are people left, they're killing for food and things. You were carrying only a backpack and warm clothes, and your only weapon was a knife. You don't have much food either—only five or six cans of canned food and some frozen bread. You do have a mini gas stove, but there's almost no gas left.

You were walking, looking around and listening to sounds, and suddenly you see a person, but you don’t understand whether it’s a man or a woman because of a pile of clothes