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

Full Sync - Save all citizens under attack.  

Memory 2 - The Sentinel, Part I - Assassin's Creed: Revelations Guide - IGN

The Mentor's Wake, Assassin's Creed Wiki

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

The Mentor's Return, Assassin's Creed Wiki

Assassin's Creed Revelations 100% Synch Walkthrough - Sequence 3 - Memory 8 - The Mentor's Keeper

Assassin's Creed Revelations Trophy Guide •

Assassin's Creed Revelations 100% Synch Walkthrough - Sequence 3 - Memory 8 - The Mentor's Keeper

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

Assassin's Creed: Revelations - Sequence 3 - Mission 8 - The Mentor's Keeper (100% Sync)

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

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

Fond Memories achievement in Assassin's Creed: Revelations

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