Or will he have to play the original story without me to unlock them? (We're on xbox so we can't hack or mod it.) borderlands - pre - sequel. Hey guys, I'm level 19 in The Pre Sequel and somehow I don't have the other two slots. I joined my friends after work yesterday and they were. or if there is already a post on how to unlock the third and fourth weapon slots with gibbed? Discussion in ' Borderlands The Pre - Sequel!.