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

Earn Crucible Rank 1.

Earn J-Points in a battle.

Complete "The Stormcaller's Path" quest.

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

Kill 30 Enemies with the Mag 5

Kill 30 Enemies with the Mk-NDI

Kill 20 Enemies with Headshots

Defeat 20 Enemies with Hand-to-Hand Combat

Finish the Game on Normal Without Changing the Difficulty

Kill 30 Enemies with the RPG-7

Kill 20 Enemies with Gunfire While Hanging

Kill 100 Enemies with Headshots