Return to the underground while no mission is active and travel from one end of the catacombs to the other.

Collect all the Gorgon Eyes

Open the wings of the Temple of the Fates

Win the battle outside of the Palace of the Fates

Defeat the Titan Minotaur inside Atlas

Cross the collapsing Grapple Bridge

Stone and Shatter 30 Enemies

Open the door to the Temple of Euryale

Topple the Temple in the Bog of the Forgotten

Whip the Steeds of Time

Kill the Colossus of Rhodes, the Dark Rider, and Theseus

Throw back a grenade and defeat two enemies at once