During Space Monkey rounds in Ascension, monkeys will attempt to destroy the Perk-a-Cola Machines. If all of the monkeys are killed without touching a perk machine, the player will be awarded with a Perk Bottle along with Max Ammo. In Call of the Dead, the Bottle, alongside a Death Machine or Wunderwaffe DG-2 (depending on if the player has completed Original Characters Trapped Easter Egg), when George A. Romero is neutralized with any weapon excluding the Pack-A-Punched V-R11.