Find the Karma weapon.

Take down Menendez and his operation.

Complete 1 challenge in any level.

Complete a level with customized loadout.

Join the Dark Brotherhood

Make a smithed item, an enchanted item, and a potion

Complete 50 Misc Objectives

Prestige once in multiplayer Public Match.

In TranZit, kill one of the denizens of the forest while it is latched onto you.

Reach Sergeant (Level 10) in multiplayer Public Match.

Reach Level 50

Complete "Glory of the Dead"