MULTIPLAYER AND BLACKOUT
Tiers are earned through gameplay but can also be purchased with Call of Duty Points. Some Tiers grant specific items while other will grant a random item.
In Zombies, Nebulium Plasma (in-game Zombies currency) can be earned through gameplay but can also be purchased with Call of Duty Points. Nebulium Plasma can then be used to obtain Elixirs and Talismans. Elixirs and Talismans are used in-game to provide temporary power-ups in Zombies mode. Elixirs and Talismans are granted randomly from a pool of Elixirs and Talismans.