INFECTED UNLOCKABLES
Bloodrayne:
Finish all missions.
Chimaira:
In mission 29, kill a zombie near the Chimaira sign then get the avatar that it drops. The sign is located in the long street section under the park at the top of the map.
Santa Claus:
Finish all missions.
Slipknot 0:
In mission 5, kill a zombie near the Slipknot sign then get the avatar that it drops. The sign is located almost in the center of Time Square.
Slipknot 1:
In mission 7, kill a zombie near the Slipknot sign then get the avatar that it drops. The sign is located in the subway.
Slipknot 2:
In mission 10, kill a zombie near the Slipknot sign then get the avatar that it drops. The sign is located by the helicopter
Slipknot 3:
In mission 13, kill a zombie near the Slipknot sign then get the avatar that it drops. The sign is located in the upper left section of the map.
Slipknot 4:
In mission 16, kill a zombie near the Slipknot sign then get the avatar that it drops. The sign is located near the landing zone.
Slipknot 5:
In mission 20, kill a zombie near the Slipknot sign then get the avatar that it drops. The sign is located in Time Square.
Slipknot 6:
In mission 23, kill a zombie near the Slipknot sign then get the avatar that it drops. The sign is located in the bottom section of the map.