50/50
Not unlocked yetUse a 50/50 killstreak.
Air Raid
Not unlocked yetKill all zombies in one round of shooting.
Art Buff
Not unlocked yetWin a game with Art & Leisure as your best subject.
Back to the Wall
Not unlocked yetKill 10 zombies in End game.
Brutal
Not unlocked yetStart a game with Brutal difficulty.
Brutal Master
Not unlocked yetWin a game with Brutal difficulty.
Bullet Storm
Not unlocked yetKill 20 zombies with a machine gun in one game.
Cheater
Not unlocked yetUse a Cheat killstreak.
Entertainment Buff
Not unlocked yetWin a game with Entertainment as your best subject.
Full Power
Not unlocked yetKill 30 zombies with grenades in one match.
Full Squad
Not unlocked yetWin a game of multiple waves with all team members alive.
Geography Buff
Not unlocked yetWin a game with Geography as your best subject.
Get The Hint
Not unlocked yetWait for a Hint.
Half Power
Not unlocked yetKill 15 zombies with grenades in one match.
History Buff
Not unlocked yetWin a game with History as your best subject.
Impending Doom
Not unlocked yetStart a match in Endless mode.
Kill Collector
Not unlocked yetGet your first killstreak.
Kill Collector Master
Not unlocked yetGet 50 killstreaks.
Kill Collector Pro
Not unlocked yetGet 20 killstreaks.
Kill Counter
Not unlocked yetKill a total of 500 Zombies.
Kill Counter Master
Not unlocked yetKill a total of 2500 Zombies.
Kill Counter Pro
Not unlocked yetKill a total of 1000 Zombies.
Won The Lottery
Not unlocked yetUse a "Lucky Shot" achievement to avoid all misses in a round.
Killing Time
Not unlocked yetAnswer a question with only one second remaining on the clock.