In Campaign, kill an enemy through a wall or obstruction.

Successfully Counter all of a Brute's Damage-Giving Attacks

Defeat 50 Enemies with Hand-to-Hand Combat

Kill 20 Enemies with Headshots

Defeat 20 Enemies with Hand-to-Hand Combat

Finish the Game on Normal Without Changing the Difficulty

Kill 50 Enemies with the M4

Kill 75 Enemies in a Row Without Dying

Kill 30 Enemies with the MP40

Kill 100 Enemies with Headshots

Kill 50 Enemies with the AK-47

Kill 5 Enemies in a Row with Headshots