Shadow of Legend is the second main quest available in Assassin's Creed Odyssey: Legacy of the First Blade.
This task will begin with a search for clues of crime around the village. You have to investigate 5 bodies lying around the stream.
When you examine the last body you will be attacked by Darius. You will have to fight against him. There's no place to take your bow and aim freely at your opponent. Darius inflicts strong and quick blows. Remember to block his attacks and deal damage as quickly as possible. This way you can quickly defeat your opponent.
After the duel you have to go to a cave where Darius will tell you his story.