Complete story level 4

Finish the Game on Normal Without Changing the Difficulty

Defeat 5 Djinn With a Sniper Rifle

Kill 30 Enemies with the Tau Sniper

Kill 30 Enemies with the T-Bolt Sniper

Complete story level 2

Kill 50 Enemies by Melee-Attacking from Behind

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

Gain 100% respect from 2 cliques simultaneously.

Achieve maximum VARIATION BONUS on any level (excluding the Prologue)

Leap over and kick an enemy from cover

Clear a path for Jack

Complete the "Rise of Iron" quest.