Throw Back a Grenade and Defeat 2 Enemies at Once

Kill 30 Enemies with the M9

Kill 5 Enemies in a Row with Headshots

Kill 30 Enemies with the Arm Micro

Kill 30 Enemies with the Mk-NDI

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

Defeat 20 Enemies with Hand-to-Hand Combat

Finish the Game on Easy Without Changing the Difficulty

Kill 20 Enemies with a Single Punch After Weakening Them with Gunfire

Kill 50 Enemies with the M4

Kill 100 Enemies with Headshots

Kill 50 Enemies with the FAL

Kill 30 Enemies with Mk-NDI Grenades