The Diary of Eurypheus was a diary written by Eurypheus in Aletheia's simulation of the Underworld. Its pages were later scattered throughout the region, and was recovered by the Spartan misthios Kassandra.
Where am I? Could it really be Elysium? If it's true, that means I perished protecting my beloved. If she's not at my side, I must hve bought her enough time to escape the bandits. While she carries on with life, I will try to find a village to settle in - but how could I ever find home without her? When her time comes, and she joins me in this place, we'll at long last be reunited. Forever. Orphedice, I will wait for you.
The Diary of Eurypheus, a journal in Assassin's Creed: Odyssey's DLC The Fate of Atlantis: Torment of Hades, seems to be loosely based on the legend of Orpheus and his wife Eurydice. The author's name is also a portmanteau of their names.