Full list of all 44 Assassin's Creed achievements worth 1,000 gamerscore. It takes around 20-25 hours to unlock all of the achievements on Xbox 360.
You've slain Jubair, the Scribe of Damascus.
You've gathered quite a supply of throwing knives.
You managed to scare away 25 beggars. I hope you're proud of yourself.
You've collected every Teutonic Flag in Acre.
You've collected every Hospitalier Flag in Acre.
You've successfully completed the Animus tutorial.
You've protected Masyaf from the Templar invasion.
You've slain Tamir, Black Market Merchant in Damascus.
You've slain Garnier de Naplouse, Hospitalier Leader in Acre.
You've slain Talal, Slave Trader of Jerusalem.
You remain undefeated for over 100 battles.
Like a Blade in the Crowd, your target never knew his death laid wait within his very shadow.
Over 100 people have witnessed your deadly performance with a blade.
Scholars know you well and have helped you over 20 times.
The Merchants of the land now know you VERY well.
You have found the traitor and have brought him before Al Mualim.
You've slain William of Montferrat, Liege-Lord of Acre.
You were bold enough to challenge 25 soldiers in a single fight... and win.
Over 50 people have felt the deadly sting of your blade.
You've collected every Masyaf Flag.
Desmond and Altair have been completely synchronized.
You've slain Majd Addin, Regent of Jerusalem.
You've slain Sibrand, the Teutonic Leader of Acre.
You've slain Robert de Sable, but there is one more...
You've discovered every Reach High Point.
The people of Acre will be forever grateful for what you've done.
The people of Jerusalem will be forever grateful for what you've done.
The people of Damascus will be forever grateful for what you've done.
You've fully honored the tenets of the Creed. You are a Master Assassin.
Over 100 city guards have fallen to your hunt.
Over 75 guards were felled by your knives.
Completed Assassin's Creed.
A strange vision has appeared to you. What could it mean?
You've collected every Jerusalem Flag.
You've collected every Damascus Flag.
You've witnessed Altair's Memorable Moments in all their splendor.
Nothing can hinder the descent of an Eagle. Over 50 people have fallen to your relentless attacks.
You've collected every Templar Flag in Acre.
You've slain Abul Nuqoud, Merchant King of Damascus.
Survival at its best, for over 10 minutes, nothing was able to hinder your flight.
You've soared with the eagles and landed safely over 50 times.
Kill every Templar.
Find All of Richard's Flags in the Kingdom.
Go through every dialog with Lucy.