As an extraction shooter, Call of Duty: Modern Warfare 3 Zombies is all about loot. Players enter into Urzikstan to gather gear that can make themselves stronger on their next deployment, with upgrades ranging from Aether Tools and Pack-a-Punch crystals to Perk cans and Ammo Mods. However, while prepping for the immediate future is important, so too is hunting down schematics in MWZ - though players currently have little to do with these rare items after each has been acquired once.