Kill at least 10 enemies with one Predator missile in Single Player or Special Ops.

Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.

Kill 2 enemies with a single bullet in Single Player or Special Ops.

Help train the local militia.

Release Amanda from her Trap.

First kill with a Scalpel.

Find your first Patient File.

First kill with a Pipe.

Fought first NPC.

First encounter with Pighead.

Complete Reverse Bear Trap.

Complete The Survivors