Unlocking the rarest Black Ops 2 Zombies achievements

My most popular series (by a ton) returns! Let's go for the rarest Black Ops 2 Zombies achievements on every map. Music: All songs are from Subnautica, published by Unknown Worlds:    • Subnautica Soundtrack - 1: Salutations   (Salutations)    • Subnautica Soundtrack - 4: God Rays   (God Rays)    • Subnautica Soundtrack - 3: Tropical Eden   (Tropical Eden)    • Blood Crawlers   (Blood Crawlers)    • Cuddlefish   (Cuddlefish)    • Subnautica Soundtrack - 9: Crush Depth   (Crush Depth)    • Subnautica Soundtrack: Into The Unknown   (Into the Unknown)