Assassin's Creed: Revelations walkthrough mission 1 & 2

Assassin's Creed Revelations is the fourth core game in the Assassin's Creed franchise. Players control both Ezio and Altair, who returns from the original game after a two game hiatus.


walkthrough 

Memory 1 - The Hangman

Watch the opening cinematic.

Congratulations, you've completed the first Memory!

Memory 2 - A Narrow Escape

Full Sync - Kill a Byzantine Templar with a counter kill.                            
Read the walkthrough for the full details.

At the start of the mission, familiarize yourself with Ezio's repertoire of acrobatic moves. Follow the onscreen instructions and use Altair's ghost as a guide of where to go to next.
Climb to the top of the tower to trigger a short cutscene and then walk outside to encounter a group of guards. To achieve Full Sync, Ezio needs to perform a Counter Kill. To do this, target a guard and press and hold the Block Button (the defensive stance). When the guard begins an attack, immediately press the Square Button (or X Button on Xbox) while holding the Block button to perform a Counter Kill and get Full Sync.
After the Counter Kill, keep pressing the Attack button on the other guards to do a Kill Streak. Clear them out and then go to the next marker.
  Follow Altair and climb and jump to the top of the castle tower. Eliminate the guards in the way and keep climbing to the very top.
Approach the eagle statue and Interact with it to complete the mission.