You need to Survive the forest from infected. or you can take out the private military or you could go around collecting resources to craft ammo and you can craft gunpowder or you can buy some resources from the traitor but you need XO coins you can sell wood or food to get XO coins. all resources are wood charcoal rocks gunpowder XO coin metal books flint. when you take out the infected they will drop resources and you can collect them you will get a few matal pieces.