In Assassin’s Creed Odyssey there are the so-called Ainigmata Ostraka riddles, which are handled like the Papyrus Riddles in the predecessor Origins.
On the one hand, you have to find the stone tablet of the respective Ostraka puzzle, which will tell you the name of the puzzle and give you hints about the treasure location.
Use the hints to find the exact location. You can read the found hints at any time, go to your inventory and then click on the bottom left of the bag. Under the tab Documents all Ostraka puzzles notes are stored.
For each completed Ainigmata Ostraka puzzle, you will receive a new engraving (bonus to your abilities).
If you are looking for a complete overview of all trophies and achievements or other puzzle solutions, here is our Assassin’s Creed Odyssey 100% Walkthrough.
Kephallonia – Ainigmata Ostraka Puzzle Solutions
Ashes to Ashes
Location stone tablet: Marko’s Vineyard
Solution: Cursed Valley of Pali, Kausos Village
Reward: +3% Adrenaline per Hit
Location stone tablet: Melissani Cave
Solution: Coast of Koliadai, inside the river
Reward: +10% Crit Damage while Full Health
Location stone tablet: Odysseus palace, Ithaka
Solution: Melanthios’ Goat Farm, North of Ithaka
Reward: +2% Damage with Swords and Daggers