Defeat 20 Enemies by Blind-Firing While in Cover (without aiming)

Defeat 50 Enemies with Hand-to-Hand Combat

Kill 20 Enemies with Headshots

Win a 4v4 game

Find 1 Treasure

Finish the Game on Easy Without Changing the Difficulty

Kill 50 Enemies by Melee-Attacking from Behind

Kill 50 Enemies with the M4

Defeat 50 Enemies with Hand-to-Hand Combat

Kill 20 Enemies with Gunfire While Hanging

Kill 5 Enemies in a Row with Headshots

Kill 30 Enemies with Mk-NDI Grenades