I started the game with my friend and with a fresh new character.
I have noticed that I can’t get any exp from his main mission, so I tried to play in my world.
However one of the first tasks “loot police car” is already completed as I looted it when I was in my friends world, but now I can’t do the same in my world and so on - can’t progress the main story.
Please make separate loot in separate worlds.