Assassin's Creed: Transcendence

Kronos amasses enough power early on to send an infant Percy back in time. Finding this development unsuitable, the Fates interfere, and only the soul of Perseus is sent back, while his body remains in the present occupied by a fake soul. Now, what is Percy doing in the past as he works his way back to the present? Eradicating the Templar Order, of course.