This is the longest chapter in Assassin's Creed: Odyssey. Throughout it you will explore various parts of Ancient Greece. You start with Lakonia where you will do the following quests: Home Sweet Home, Bully the Bullies, One Bad Spartan Spoils the Bunch.
Home Sweet Home
Time to go back to your home. Head to Lakonia. Follow Myrrine. On your way you will come across children fighting with wolves. Myrrine informs you that this is a Spartan test - you can help the children or move along.
Kill the wolves if you have decided to help the children. The kids will die, regardless of your decision. A few Spartan soldiers appear - make your choice. After that Myrrine will ease the situation. Keep walking. You will have a few conversations. You reach the town where you meet with Brasidas. Rewards: 15,300 XP.
Bully the Bullies
Speak with Myrrine - the game will show you a cut-scene from Leonidas's past. After that Puasanias, one of the kings of Sparta, will arrive. Speak with him and agree to complete his quest. You have to kill three targets - this shouldn't be difficult for you to do although you will have to walk a lot. Rewards: 15,300 XP.
One Bad Spartan Spoils the Bunch
Track down the Spartan traitor and destroy 5 weapon racks. Reach the marble quarry to attack the enemies.
You will have to fight a lot. Remember to destroy the weapon racks - they can be found, i.e. in tents or in the nearby cave. Kill the traitor and destroy all the targets. Rewards: 15,300 XP.
Kings of Sparta
Meet with Brasidas. You will have an audience with two kings of Sparta. Your character and Myrrine want to reclaim their house so they can go back to Sparta. However, the kings will order you to complete a few difficult missions. You have to, i.e. help them win the Olympic games, and conquer one of the key regions in the Peloponnesian War. You have a lot of work to do. Rewards: 15,300 XP. You can now choose which quest you want to complete first - their walkthroughs can be found on the next pages of this guide.