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