Kill 50 enemies with the AK-47

Kill 20 enemies with a brutal combo

Kill 10 enemies with headshots

Find one treasure

Complete "Curious Tales from Blackwater, USA" Survivor Mission.

Kill 5 enemies with a single frag grenade in the campaign.

Create a new mission using the UGC level editor.

Play 10 user-generated missions.

Wield the knife in single player or co-op mode.

Choose Nix in Storm the Fort.

Complete BOOM!

Stay off the ground for 130 meters.