Kill two enemies with simultaneous quick draws while in co-op mock surrender

Heal your partner 10 times

Kill 3 or more enemies with a single grenade

Kill 400 enemies with assault rifles, submachine guns or shotguns

Tie up 15 enemy combatants instead of executing them

Complete Chapter 3 on any difficulty level

Use 15 enemies as human shields

Make a negative coop morality choice

Make a positive coop morality choice

Acquire Rage of the Titans

Defeat the Dark Rider for the first time

Beat the Game on any Difficulty

Free yourself from the depths of Hades