Defeat all the Cultists of Kosmos.

Complete Episode 8.

Complete the Olympic questline.

Perform an Overpower Attack with every weapon type.

Complete the Hippokrates questline.

Unveil all sub-regions of Greece.

Defeat the Insatiable Despot in the dried-up trenches

Defeat the Butterfly of Delirium in the ruined city center

Give a desired valuable to a friend

Successfully use a special drain from a parry, back attack, or launch attack

Defeat the Hekatonchires.

Kill 10 Isu Soldiers with the Blessing of Kronos enhancement.

Collect all the Keeper's Insights in Episode 3.