Ok. I was playing zombies in spaceland and had got skull hacker in a previous set of zombie crates. So I activate it, and play ghosts n skulls solo. I win and get all the perks. a few rounds later, I go down. I lose up n atoms. I am confused at this point so afree leaving afterlife arcade I go to lost and found to get my guns then to the vending machine to get it back. It says my perk slots are full. Is this what is supposed to happen? You can revive only once? Or is this in error? I would really like to know.