The volcanic islands are two small islands in the northern part of the Assassin's Creed: Odyssey world map. The islands include Thassos and Lemnos. You won't find many side missions here, but we've described every one there is to help you play Assassin's Creed: Odyssey.
Mission start: Talk to the man.
Description: Having talked to the man, you'll need to talk to Mikoss. After the second conversation is over, you will unlock another task - Have You Seen My Mikoss?
Have You Seen My Mikoss?
This mission consists of three sub-sections - Doctor's Pet, School of Hard Knocks, and Indulging Just a Little.
Doctor's Pet starts with a conversation with a man in Aliki Quarry. After this conversation you have to go to Silver Mines and free the doctor. He's inside the cave, but you can wait until your opponents come out and then get in to free the man.
Your next task will be to get rid of the two men responsible for the kidnapping. They are in Koinyra Fortress. It is best to eliminate the perpetrators with a bow so that you don't waste your time fighting your way through the whole enemy camp. After killing both men, the mission will end.
The School of Hard Knocks requires you to fight several skirmishes on the school grounds. First, you will have to prove your abilities to the man and his students. Only when you best them will the main opponent come out to you. There will be more students who want to help their trainer during the fight. Beat them all and the mission will end.
Indulging Just a Little is the last of the aforementioned tasks. Its first part is based on reaching Karpos' house, destroying exotic wine and killing his servants.
After completing the first part of the task go to the Silenos cave. There are two guards in front of the cave. Get rid of them quietly, otherwise they will interfere during the mission. You have to get two athletes out of the cave. You can do this quietly, avoiding all enemies, or get rid of all of them first and then release the athletes without any problems.
After leaving the cave, the athletes will find out that one of them was drugged and he goes mad. Killing him will complete the mission.
Mission start: Automatically, after you complete the Have You Seen My Mikoss? Mission.
Description: You'll begin this mission by talking to the doctor. He will send you to Mikoss' house. Once there, it will turn out that a great fire broke out. Get rid of all the opponents and talk to Mikoss.
Mikoss will request you to kill a cultist general. Go to Ancient Stronghold and kill the general. This will complete the mission.