Apocalyptic World

When things went bed you were just 18 year old gamer guy, who lived with his grandfather in his house. You were one of the lucky ones becaus your grandfather is hardcore military guy who had his own nuclear bunker with a lot of stock in it. You managed to live there for 10 years, till nothing was left.
Game idea is that it will be a fully open world, rpg game where you can be who ever you want. You want to be a farmer, slave merchant, just a random good/evil guy, bounty hunter, cage figher, Cannibal? You can be whatever you want!