All 4 Dead
Kill all four Survivors in one life while playing as a Tank. 30
当使用tanks 坦克 的时候，在被杀死前 杀死4名幸存者
Dead Wreckening
Dole out 5000 total Survivor damage as a Special Infected. 20
当使用僵尸boss的时候，对幸存者累计造成5000伤害
Lamb 2 Slaughter
As an Infected, incap a Survivor who has entered and left a safe room
