Exo Zombies - All Keycard Locations! This video shows all the keycard locations for the exo zombies easter egg on the map "OUTBREAK". Make sure you're SUBSCRIBED so you don't miss out on any of future content :D

● AW NEW DLC - http://bit.ly/1toKn7a
● EXO ZOMBIES GAMEPLAY! - http://youtu.be/EmP-gGrr5uo

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