Successfully complete the game. When the Memory Blocks are played again in Story mode, you can kill anyone without penalty. Additionally, you will be able to use Eagle Vision at any time regardless of Synchronization levels inside of the Animus.
Escaping from guards
Go to a high roof when chased. Kill the guards that appear. After a few kills, they will either run or give up.
Note: Only attempt this technique if you are fluent in the Rank 2 skill "Counter" and have enough Synchronization 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.
While in battle, if you see a guard you are fighting physically emote in any way (for example, taunting you or cowering in fear), press Low Profile Assassinate while facing them to score an instant kill without having to counter.
The best weapon for more than four guards or thugs is the Short Blade.
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, in the last three quarters of the game, you may have to grab them up to four times.
To lower the time needed to complete the game and decrease the difficulty of each major assassination, do the following in order (with the exception of Masyaf):
Visit the Assassin's Guild.
Scan the city by first climbing all of the view points.
Rescue all the citizens from the thugs. You will need the help after a major assassination.
Successfully complete all of the informant's missions (to get all the valuable information you can).
Pickpocket the shysters in all of the pickpocket missions (for information to the Guild).
Once all of these are completed, go back to the Assassin's Guild to start the major assassination mission.
When you go to bed after Memory Block 2, you will notice your closet door is open. Press 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 go 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.
Decoding e-mails from Lucy's computer
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!
Removing the capital letters out of the message decodes the message as:
WE WILL BE THERE SOON
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
To decode this, start reading at the bottom right hand corner to the top right hand corner, so you will start at "A" and stop at "S". It will spell a real word. Do this for all of the columns and it will read:
ARTEFACTS SENT TO THE SKIES TO CONTROL ALL NATIONS TO MAKE US OBEY A HIDDEN CRUSADE DO NOT HELP THEM
Next, do the same thing to the mixed letters on the other side of the Amnius:
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
It will spell out:
THEY DRAINED MY SOUL AND MADE IT THEIRS I DRAINED MY BODY TO SHOW YOU WHERE I SAW IT
Defeating Al Mualim
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.
The first part is simple. Take out your sword, as you will be fighting all your previous assassination targets. They are fairly easy to kill. Only one counter is required to kill each of them. For the second part, as soon as Al Mualim releases you, use your Eagle Vision. The real Al Mualim is the one in yellow. Focus your attacks on him. In the third part, Al Mualim takes away your synchronization bar and radar, allowing him to kill you in one hit. Take out your throwing knives. Look for the Piece of Eden in his hand. Once you see him, throw a knife at him. Then, just counterattack/grab break him. Keep repeating this until he says, "Damn you Altair!" Finish him off with your hidden blade or keep attacking him with your sword until he is dead.
When initiating combat against a Templar, lock on to him. Then, quickly equip the hidden blade. Wait for him to attack you so that you can counter attack, killing him in one blow. This is better than the sword fight. If you counter with the sword, you will only knock him down and not kill the Templar.
Defeating William of Montferrat in Acre
After the guards (or most of them) leave William, drop down from the castle, and slay William. Then, "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.
Go 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 to see it looks exactly like G1 Optimus Prime in vehicle mode. Note: 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.