On the Grapevine
How to unlock: Pick up one of the notes marked orange on the map.
Walkthrough: Your goal is to find 4 letters. You collect the first one when you start the mission. The second note is in Olouros Fortress. The letter lies on a table in one of the tables.
The third letter is in House of the Phoenician. The letter is in the left part of the building, among the chests.
The last letter is in Patrai. It lies on the table located in the right part of the building. Collect all letters to complete the mission.