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.
Reach level 20 in the multiplayer mode.
Unlock a hacked version of one of the Abstergo videos in the story quest.
Be on the winning team at the end of a multiplayer game session.
Customize your multiplayer Profile and Character.
Reach sequence 10 in a map on Wolfpack multiplayer mode.
Complete ALL progress tracker grid entries.
Find all pivots and sync the Animus to the Cloud.
Complete each of the epilogue missions unlocked after the credits roll.
Open the Temple Door and learn Desmond's fate.
Complete Sequence 12.
Complete 100% of all main mission constraints.
Complete Sequence 11.
Complete the Encyclopedia of the Common Man.
Complete all challenges for any of the Clubs.
Complete all Naval Missions aboard the Aquila.
Complete all 12 Privateer Contracts.
Complete Present - Abstergo.
Complete Sequence 10.
Kill 15 guards with a single cannon shot.
Hang 5 enemies by using rope darts.
After becoming fully Notorious, kill 10 Jagers before losing your notoriety.
Send a convoy to Boston, New York and the Frontier.
Exchange undamaged pelts at all different general stores.
Uncover the mystery of Oak Island.
Craft one of Franklin's inventions to decorate your Manor.
Have a Trainee reach the Assassin Rank.
Win a game of Fanorona, Morris and Bowls on the Homestead.
See all the optional characters settled at the Homestead.
Complete Sequence 9.
Liberate all districts in Boston OR New York.
Perform a double assassination using a musket.
Upgrade the Aquila.
Complete 50% of the Progress Tracker entries.
Complete Present - Stadium.
Complete Sequence 8.
Witness a predator killing an enemy.
Loot a convoy without killing any of its guards.
Block a firing line 5 times by using a human shield.
Complete Sequence 7.
Complete Sequence 6.
Explore Fort Wolcott.
Retrieve every page for one of Ben Franklin's Almanacs.
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.
Re-Enter the Animus.
Complete a Wolfpack multiplayer session on any of the additional maps.
Finish a multiplayer game session with each of the additional characters.
With any of the additional characters, perform 20 ‘Revive’ actions.
Stun 3 pursuers without dying, playing with any of the additional characters.
Reach 100% synchronization in the Frontier.
Kill 25 enemies while staying cloaked.
Defeat Benedict Arnold.
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.