Memory 8 - The Mentor's Keeper - Assassin's Creed: Revelations

Full Sync - Save all citizens under attack.  

Seal the Deal achievement in Assassin's Creed: Revelations

Memory 8 - The Mentor's Keeper - Assassin's Creed: Revelations Guide - IGN

Memory 10 - The Sentinel, Part II - Assassin's Creed: Revelations Guide - IGN

Memory 6 - Escape - Sequence 7 - Underworld - Primary Memories, Assassin's Creed: Revelations

Memory 8, Sequence 3 - Lost and Found - Assassin's Creed: Revelations Game Guide & Walkthrough

FAQ/Walkthrough - Guide for Assassin's Creed: Revelations on Xbox 360 (X360) (95465)

Memory 2 - Upgrade and Explore - Sequence 2 - The Crossroads of the World - Primary Memories, Assassin's Creed: Revelations

Fond Memories achievement in Assassin's Creed: Revelations

Day 33/100] Assassin's Creed: Revelations - Sequence 03 - 'Lost and Found' : r/assassinscreed