Complete 3 of 7 levels on Veteran difficulty

Complete Welcome to the Jungle

Complete Post-Human

Complete the Campaign using max one medkit per mission

Complete the game on Medium

Kill Maddox once and for all ("No Loose Ends")

Kill 15 enemies with a stealth kill

Complete any act without using medkits

Take 50 headshots in single player

Rescue the friendly ("From Out Of Nowhere")

Take a successful shot from a distance of 1 km or greater

Complete any single player mission without using med kits, but taking damage

Prestige once in multiplayer Public Match.