Though he bested his attackers, he was forced to flee when guards found him.

Unfortunately, the same men who accosted him before he could reach François. But as soon as François set off, his servant, Perrault, tried catching up to him, revealing to have a letter of great importance, which Arno volunteered to deliver. When his angry pursuers chased him back to the de la Serre mansion, François attempted to mediate the situation, assigning Arno to assist his butler, Olivier, with whatever chores he would assign, which was cleaning the horses for François' carriage ride to meet Élise. Thirteen years later, Arno found himself in no end of trouble, having lost his father's watch in a card game and stole it back. Wishing not to corrupt the memory of Arno's biological father and bring his pupil to the Templar Order, François kept his Templar involvement a secret from the young boy. He raised Arno alongside his own daughter, Élise. He was subsequently adopted by François de la Serre, the Grand Master of the French Templars, out of respect for his enemy. However, in 1776, when Arno was eight, his father was murdered by Shay Cormac. Due to his upbringing, he was well educated, having access to tutors and various books.

Born to an Austrian mother and French Assassin Charles Dorian, Arno was raised in a noble household in Versailles.

Arno victor dorian download