Chimp on the Barbie is a achievement/trophy in the Zombies map Ascension. It requires the player to kill a Space Monkey with a Fire Pit trap. It can easily be done by luring Space Monkeys towards Stamin-Up and using the Fire Pit near it. Another way is to activate the Fire Pit near Pack-a-Punch at the beginning of the round. There is only the two aforementioned Fire Pits on the map.