Die.
Use your Special 10 times
Kill 500 Zombies
Defend your location for 30 waves
Kill 300 Zombies
Defend your location for 20 waves
Defend your location for 10 waves
Kill 100 Zombies
Use your Special for the first time
Kill your first Zombie
Die 10 times
Die 100 times
Die 50 times
Do a Headshot!
Kill 1000 Zombies
Kill 750 Zombies
Find yourself a Secret Gift!
Use your Special 100 times
Get yourself a Trophy!
Defend your location for 100 waves
Defend your location for 40 waves
Defend your location for 50 waves
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