Rescued a groupmate from death in a co-op game

Won a duel against another player

Played in a co-op game with either an employee of Gearbox or someone who had this trophy

Defeated David Nord (Agent Zero)

You feel a cold as you examine the sword and skeleton. A rustle of wind in the trees faintly echoes the name Arthas

20 Spikeshot kills in single player campaign

30 Volk S4 kills in single player campaign

Killed 200 enemies in Feral Sense

Killed 30 enemies using objects in the environment

Killed 50 enemies while in Berserker mode

Performed 10 Air Grabs

Complete Chapter 1 on any difficulty setting

Kill Poseidon