: Most maps feature hidden, multi-step objectives that reveal the story and culminate in epic boss fights. Iconic Maps and Eras
: Players earn points (Essence) by killing zombies and repairing barriers. These points are used to open new areas, buy weapons from Wall Buys , or gamble for powerful gear at the Mystery Box . Call of Duty: Black Ops Zombies
: Iconic vending machines provide permanent (until downed) stat boosts, such as Juggernog for increased health and Speed Cola for faster reloading. : Most maps feature hidden, multi-step objectives that