Survived the finale of a Spring game.
Survived the finale of a Fall game.
Be the only human to complete the mission objective.
Used an antidote to respawn after death.
Attend the finale as a human.
Collected 3 kills in a short interval.
Collected 4 kills in a short interval.
Collected 5 kills in a short interval.
Was an OZ.
Kill a human while they're disputing a kill with an admin.
Attend the finale as a zombie.
Surpass the OZ in kills.
Was an AZ.
Completed 2 missions.
Completed 5 missions.
Completed 10 missions.
Complete a build mission.
Complete a stealth mission.
Be the first human killed by the OZ.
Attend a player meeting.
Collect 10 Achievements.
Sometimes chance pays off...
Collect 15 Achievements.
Recruit a new player, and make sure they join in the fun by playing at least one mission.
The intent is to provide players with a sense of pride and accomplishment for unlocking different heroes.