Modern Warfare 3's Zombies mode is filled with rare and valuable weapon blueprints and schematics for players to earn. From the Aether Blade Schematic to the VR-11 Wonder Weapon, there are plenty of weapons and items for players to grind on and unlock as they level and progress. However, the grinding process isn’t simple and straightforward, with some missions requiring you to complete multiple quests to get a reward rift.