Meet Santángel and Christoffa

Go to the Thieves' Guild was a virtual representation of one of Ezio Auditore da Firenze's genetic memories, relived by Desmond Miles in 2012 through the Animus.

Description

Luis: Ezio thank you for all you have done.
Ezio: I'm glad to see you safe, Christoffa, but I am not here to further your interests. I have questions of my own.
Christoffa: I won't have many answers. Borgia was merely a financial opportunity. I didn't know him personally.
Luis But you may have another chance to find him. Tell him, Christoffa...
Christoffa: The Spaniard discovered out lodgings. Our hostel is crawling with his soldiers. They are searching for an atlas of significant worth, containing maps charting a Western route to the Orient.
Luis: We are prepared to leave Italia for good, but not without that Atlas. In the wrong hands, it could cause great harm.
Ezio: Va bene. But this will be my final favor.
Luis: Thank you Ezio. We will wait for your return in the harbour district.

Ezio agreed to reclaim Christoffa's Atlas.

Assassin's Creed II: Discovery memories
Main missions
Memory Block 1
Go to the Thieves' Guild - Find Christoffa - Return to the Thieves' Guild
Memory Block 2
Meet Santángel and Christoffa - Find Christoffa's Atlas - Bring the Atlas to the Harbor
Memory Block 3
Chase the Thief - Find the Assassin's Guild - Escape the Ambush - Assassinate Gaspar Martínez - Rescue the Assassin
Memory Block 4
Find Pedro Llorente - Rescue the Captured Assassins - Rescue the Last Captured Assassin - Assassinate Pedro Llorente - Return to Sánchez
Memory Block 5
Race to the Cygnet - Eliminate the Templar Presence - Save the Civilians - Survive the Ambush - Assassinate the Templar Spy - Report the Spy's Death - Enter Granada City
Memory Block 6
Infiltrate Alhambra Palace - Find King Muhammad - Escape the Tower - Open the Palace Gates - Stop the Burning of the City
Memory Block 7
Protect Civilians from Inquisitors - Assassinate Juan de Marillo - Find Christoffa - Stop the Assassination
Memory Block 8
Rid the Palace of Inquisitors - Rescue Raphael Sánchez - Infiltrate Torquemada's Dwelling - Assassinate Tomás Torquemada
Challenge missions
Challenge 1 - Challenge 2 - Challenge 3 - Challenge 4 - Challenge 5 - Challenge 6 - Challenge 7 - Challenge 8 - Challenge 9 - Challenge 10