User blog comment:Master Sima Yi/Assassinews 03-12-'14 — New Assassin's Creed in Victorian London leaked/@comment-5174994-20141206175905/@comment-4892808-20141206232347

@outsider to unlock them you have to play the mssions that have an atifact simbol on them, they are in the invalides and the panteon if im not mistaken, then you go fetch them in-game. The thing is, those missions are level 15+, so it takes a lot of time to have the assassins to complete them.