Please note that the new additional content for Assassin's Creed: Revelations called "The Lost Archive" is now available on the marketplace at a price of 800 Microsoft points (contrary to previously leaked, which gave the DLC to 1200MP) and focus on your storage devices around 580MB. As always you can append the web to download the following address while below we offer the complete description offered by Microsoft.

"Discover the subject's past 16 misterioro and Lucy Stillman on a brand new two-hour extra content to single player that uses innovative narrative style and the enigmatic game system sequences of Desmond in Assassin's Creed ® Revelations. Download The lost archive and unlock new features: three different estates (the armor by Turkish Assassin Ezio, the role of Altaïr and the armor of Brutus) + capacity upgrades (for pistol, crossbow and bombs) + one additional mission: the Prison of Vlad the Impaler; Multiplayer: for the three characters (the Crusaders, the Ottoman and the Jester Cerusico Ottoman) ".