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