Full list of all 64 Assassin's Creed III achievements worth 1,350 gamerscore. It takes around 40-50 hours to unlock all of the achievements in the base game.
The base game contains 50 achievements worth 1,000 Gamerscore, and there are 4 DLC packs containing 14 achievements worth 350 Gamerscore.
Unlock a hacked version of one of the Abstergo videos in the story quest.
Reach level 20 in the multiplayer mode.
Be on the winning team at the end of a multiplayer game session.
Reach sequence 10 in a map on Wolfpack multiplayer mode.
Customize your multiplayer Profile and Character.
Complete ALL progress tracker grid entries.
Complete 100% of all main mission constraints.
Complete the Encyclopedia of the Common Man.
After becoming fully Notorious, kill 10 Jagers before losing your notoriety.
Have a Trainee reach the Assassin Rank.
Loot a convoy without killing any of its guards.
Liberate all districts in Boston OR New York.
Find all pivots and sync the Animus to the Cloud.
Complete all challenges for any of the Clubs.
Uncover the mystery of Oak Island.
Exchange undamaged pelts at all different general stores.
Send a convoy to Boston, New York and the Frontier.
Complete all 12 Privateer Contracts.
Complete each of the epilogue missions unlocked after the credits roll.
Open the Temple Door and learn Desmond's fate.
Complete Sequence 12.
Complete Sequence 11.
Complete Present - Abstergo.
Complete Sequence 10.
Kill 15 guards with a single cannon shot.
Hang 5 enemies by using rope darts.
Complete all Naval Missions aboard the Aquila.
Complete Sequence 7.
Complete Sequence 9.
Complete 50% of the Progress Tracker entries.
Craft one of Franklin's inventions to decorate your Manor.
See all the optional characters settled at the Homestead.
Explore Fort Wolcott.
Complete Present - Stadium.
Complete Sequence 8.
Upgrade the Aquila.
Complete Sequence 6.
Witness a predator killing an enemy.
Retrieve every page for one of Ben Franklin's Almanacs.
Block a firing line 5 times by using a human shield.
Complete Present - Skyscraper.
Complete Sequence 5.
Recruit any of the Artisans and see them settled on the Homestead.
Be invited to join a Club.
Complete Sequence 4.
Complete Sequence 3.
Complete Sequence 1 & 2.
Perform a double assassination using a musket.
Re-Enter the Animus.
Win a game of Fanorona, Morris and Bowls on the Homestead.
Complete a Wolfpack multiplayer session on any of the additional maps.
With any of the additional characters, perform 20 ‘Revive’ actions.
Stun 3 pursuers without dying, playing with any of the additional characters.
Finish a multiplayer game session with each of the additional characters.
Reach 100% synchronization in the Frontier.
Defeat Benedict Arnold.
Kill 25 enemies while staying cloaked.
Receive an unexpected gift.
Reach 100% synchronization in Boston.
Defeat Putnam.
Use Eagle Flight to travel 1 km.
Reach 100% synchronization in New York.
Defeat George Washington.
Kill 125 enemies using Bear Might.