Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Kill 2 Infected	Kill 2 Infected to complete.
Kill 4 Infected	Kill 4 Infected to complete.
Kill 6 Infected	Kill 6 Infected to complete.
Kill 8 Infected	Kill 8 Infected to complete.
Kill 10 Infected	Kill 10 Infected to complete.
Kill 12 Infected	Kill 12 Infected to complete.
Kill 14 Infected	Kill 14 Infected to complete.
Kill 16 Infected	Kill 16 Infected to complete.
Kill 18 Infected	Kill 18 Infected to complete.
Kill 20 Infected	Kill 20 Infected to complete.
Kill 22 Infected	Kill 22 Infected to complete.
Kill 24 Infected	Kill 24 Infected to complete.
Kill 26 Infected	Kill 26 Infected to complete.
Kill 28 Infected	Kill 28 Infected to complete.
Kill 30 Infected	Kill 30 Infected to complete.
Kill 32 Infected	Kill 32 Infected to complete.
Kill 34 Infected	Kill 34 Infected to complete.
Kill 36 Infected	Kill 36 Infected to complete.
Kill 38 Infected	Kill 38 Infected to complete.
Kill 40 Infected	Kill 40 Infected to complete.
Kill 42 Infected	Kill 42 Infected to complete.
Kill 44 Infected	Kill 44 Infected to complete.
Kill 46 Infected	Kill 46 Infected to complete.
Kill 48 Infected	Kill 48 Infected to complete.
Kill 50 Infected	Kill 50 Infected to complete.
Kill xx Infected	Kill xx Infected to complete.