Finish the Game on Normal Without Changing the Difficulty

Kill 50 Enemies with the M4

Kill 100 Enemies with Headshots

Kill 20 Enemies with Gunfire While Hanging

Defeat 50 Enemies with Hand-to-Hand Combat

Kill 20 Enemies with Headshots

Kill 75 Enemies in a Row Without Dying

Defeat 20 Enemies with Hand-to-Hand Combat

Finish the Game on Normal Without Changing the Difficulty

Kill 50 Enemies with the M4

Kill 30 Enemies with Mk-NDI Grenades

Defeat 250 Enemies with Headshots

Kill 20 Enemies by Shooting from the Hip (without aiming)