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

Defeat 20 Enemies with Hand-to-Hand Combat

Kill 5 Enemies in a Row with Headshots

Finish the Game on Easy Without Changing the Difficulty

Finish the Game on Hard Without Changing the Difficulty

Compare Statistics with Friends

Kill 30 Enemies with the Desert-5

Kill 50 Enemies by Melee-Attacking from Behind

Kill 100 Enemies with Headshots

Defeat 50 Enemies with Hand-to-Hand Combat

Kill 5 Enemies in a Row with Headshots

Kill 20 Enemies with Gunfire While Hanging

Kill 30 Enemies with the Wes-44