Defeat the octomoth.

Defeat the Z'Grute.

Complete Chapter 8 - Every life is sacred on any difficulty

Complete Chapter 6 - Into the Wild on any difficulty

Complete Chapter 4 - The Sights on any difficulty

Complete Chapter 2 - Thank Heaven on any difficulty

Buy your first weapon.

Play a single-player game.

Kill Zeus

Collect all of the Minotaur Horns

Collect all of the Gorgon Eyes

Completely upgrade all weapons

Blind 100 enemies with the Head of Helios