This section of Assassin's Creed: Odyssey walkthrough includes the description of all side quests available in Argolis. Each description covers the location, walkthrough, and the list of rewards.
Enough is Enough
The quest starts: after you talk to a man named Preist.
Description: Your task is to kill the snakes. It is enough for you to enter the sanctuary's main hall to see a small, dark room. Throw a torch inside. The game will automatically indicate the position of all snakes. Do not enter this room - just draw your bow and kill the snakes.
After you eliminate all serpents, return to Preist. Talking to him will finish this quest. As a reward, your receive 6075 experience points.
Written in Stone
The quest starts: after you talk to Timoxenos.
Description: After the dialogue, Timoxenos will show you around the neighborhood. Follow him and listen to his story.
At some point, Timoxenos will stop under an olive tree. Approach him and start a conversation. During the dialogue, you will be attacked by the opponents. Eliminating them will finish this quest. As a reward, you receive 8700 experience points.
Death comes for Us
This quest starts: after you talk to a woman on the bridge.
Description: After you talk to the woman, you need to go to the forest in search for her husband. There, you will find the man's corpse. After you start investigating it, Chrysis will appear - a member of the Cult - together with three soldiers. Kill all of them. After that, the quest finishes and you receive - Artifact Fragment, Gauntlets of the Immortal, Letter to Chrysis and 10875 experience points.