Kill 100 enemies with Fire, Frost, or Lightning damage as a Sorcerer.

Compel Orpheus to sing again

Clear Elysium

Fulfill the 'Chthonic Colleagues' Prophecy

Unlock each of the Infernal Arms

Clear Asphodel

Clear Tartarus

Use a chandelier to kill an enemy.

Achieve an "Amazing!!" combo.

Beat Shiva.

Destroy all motorcycles.

Kill an enemy by tossing them in a hole.

Use a barrel or a grenade explosion to kill 3 enemies at the same time.