"Unlock MW3 Armory Challenges in Zombies Mode with New Exploit"
MW3 players have discovered an exploit in the Zombies mode that allows them to skip the grind of unlocking weapons in the Armory and completing daily challenges. By playing the Zombies mode and extracting with weapons and equipment that are not yet unlocked in multiplayer, players can permanently unlock them. This exploit also works for level-gated unlocks outside of the Armory. It is unclear if this was intended by the developers, so players are advised to take advantage of it while it lasts.