I'm actually betting that there is not a grandiose opening set piece like you kind of described. you are [i][/i]a[i][/i] guardian not [i][/i]the[i][/i] guardian. I'm thinking it will be a subtle opening with maybe a tour of the city and some intro missions you can choose from. It sounds to me like the game is giving less of a master chief angle, going for more "you become a legend by what you choose to do", not by how the game directs you. I also don't think there will be a "three unlikely friends" angle as I am sure that you can play together with three of the same race/class and probably more than just three as well. In that same Idea, you are probably not shoehorned into playing with two other AI characters if you are soloing. I'm actually hoping for a more metroid type story where you learn about the lore through exploration and discovery rather than told through video.