Find five treasures

Rescue the guards and henchman from the Joker toxin in Decontamination

Take down Zsasz in the Patient Pacification Chamber

Acquire the Golden Fleece

Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops.

Acquire Cronos' Rage

Kill 10 enemies with headshots

Find one treasure

Acquire Typhon's Bane

Defeat the Dark Rider for the first time

Beat the Game on any Difficulty

Free yourself from the depths of Hades