It’s history. It’s set in stone. What’s done is done. These are all ways we have of saying that you can’t change the past – and while it’s true that the wheels of time grind ever forward, the team at Ubisoft Montreal is working incredibly hard to make sure that rigid line a lot more flexible in Assassin’s Creed Odyssey than it’s been in previous adventures.
Player choice is baked into the core of every aspect of Odyssey’s massive rendition of ancient Greece, furthering the series’ transformation into a full-fledged role-playing game after the initial introduction of RPG progression elements in Assassin’s Creed Origins. “We are really embracing the role-playing aspect of RPGs,” says Odyssey’s Creative Director Jonathan Dumont. “We are continuing that transformation.
Source: IGN.com How Assassin's Creed Odyssey Introduces RPG Choices