Rescue 50 Civilians From The Militia
Kill 50 enemies with the heavy object smash
Kill 12 enemies
Buy everything in Survival Mode
Beat a Campaign level with no ranged attacks
Buy nothing for 10 straight waves of Survival
Kill a Survival Boss with no traps or grenades
Do 10 combos of 20 hits or more
Get 30 firetrap kills in one Survival match
Reach the zombie wave in each Survival map
Complete Campaign Mode on Hard difficulty
Complete Campaign Mode on Normal difficulty
Defeat all the waves in any Survival Mode map