Easier thab Odysssy's the prologue puts you in a young Eivors shoes. During this prologue you'll be able to dance with a lady, play ball in the main hall (sorry for the rhyme) and talk to various people. You'll meet some key member of the storyline during this exchange as well.
Towards the end you'll be faced with chosing a female or male Eivor, chose whichever one you want and you get the trophy shortly after.