This badge is awarded to players who survive 14 days and kill 300 zombies. This badge can be easily obtained by going to Kin and server hopping, even though that is cheap. Also going around the map for about an hour should really help.
- Conserve ammo by using Melee Weapons to get zombie kills.
- Going into heavily populated areas, such as Union Square, (or Kin in general) can be good for a high amount of zombie kills.