First complete the game. When the Memory Blocks are played again in Story mode you can kill anyone without penalties. Additionally, you will be able to use Eagle Vision at any time regardless of Synchronization levels inside of the Animus.

After you beat the Game, when you go back to the story mode you can kill anyone without losing life.

One item you can pick up after being able to unlock your bedroom door is Lucy's password. You can then investigate her e-mails, which entail a short secondary story line. After you complete the last Memory Block, go back outside your room. Go to Lucy's computer. In "Deleted Items" is an e-mail which entails her talking to someone about a rescue, then the last reply comes back as:

WondEr Why It is everyone Laughs at you? 

i'll Let you guess. let's just say she's 

proBably gEtTing it bigger and better from 

someone else tHat isn't you. how can you 

hope to compEte? REst asSured there are 

sOme gOod ways. click the liNk to see!

When you go to bed after Memory Block 2, you will notice your closet door is open. Hit any button to get a piece of paper Desmond notes as a code. The code will unlock your bedroom door which will allow you to be able to go out as often as you like after you are put to bed, as well as to open the meeting room area. You can also pick up various items to unlock Lucy's password.

After you get the "target" to a safe area to "interrogate" them, punch them first then "grab" them for faster completions. It will take about two grabs to quickly finish them. However, into the last three quarters of the game you may have to grab them up to, but exceeding, four times.

Only attempt this technique if they are fluent in the Rank 2 skill "Counter" and they have enough synchronization bars (a.k.a., life bars). One and a half rows of bars will do. When in battle, equip your hidden blade. With this equipped, all of your counters will score an instant kill. You can even instantly kill tougher ranked guards (for example, the Teutonic guards in Acre when hunting Sebrand). Also, most of the time using the hidden blade in battle will scare the last one or two (even three if you are lucky) guards, causing them to run away. However because you do not have a weapon that is sufficient enough to block a full sized enemy blade, all incoming attacks will hurt you.

After the guards (or most of them) leave William, drop down from the castle and slay William. Afterward, "de-target" or deselect, and run up into the castle buildings and battlement to get away. This is the fastest way of completing the mission.

When fighting the Master he will take away your ability to use radar and make it difficult to see. This also allows him to hit you once and kill you. Lock on to him and use a throwing knife against him. This will take away his power to blind you and make him easier to kill.

To access Dr. Vidic's computer and emails, before starting Memory Block 5, walk up behind him and press any button to steal his pen.

When you go to bed after Memory Block 3, you will notice your closet door is open. Hit any button to get a piece of paper Desmond notes as a code. The code will unlock your bedroom door which will allow you to be able to go out as often as you like after you are put to bed, as well as to open the meeting room area. You can also pick up various items to unlock Lucy's password.

Successfully complete the game and allow the credits to end. You will be given the access code for the computer attached to the Animus. Hack the computer to access an inbox, outbox, and deleted message. Look at the inbox and choose the email about the conference room. You can go to the conference room and access it via the keypad.

After killing Al Muaiam and returning to the real world, listen to the conversation about how they going to kill you. Turn on your Eagle Vision and look at the floor. There are some mixed up letters on both sides of the Amnius. You should see on the side closest to the main door:

M O R Y M N O E S

E N C E O L C H T

H O N B T L O T C

T D E O S A T O A

P E D S N L S T F

L D D U O O E T E

E A I E I R I N T

H S H K T T K E R

T U A A A N S S A

A

D R H

O O D T M

W H B I T D O

E U S Y S I N S E

A R O O M R E A Y N R

I S E Y T N I D L M I D E

T W I H W Y I E A U D A Y H T

Travel to the southwestern-most vigilantes in the poor district of Damascus. On one of the buildings around them, you should see an outcropping in the wall, climb on it and you will see that it looks exactly like G1 Optimus Prime in vehicle mode. Note that there may be more than one outcropping in the area, so look carefully. If you lose sight of the vigilantes, you have gone too far.