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.
Be on the winning team at the end of a multiplayer game session.
Complete ALL progress tracker grid entries.
Complete 100% of all main mission constraints.
Unlock a hacked version of one of the Abstergo videos in the story quest.
Customize your multiplayer Profile and Character.
Reach sequence 10 in a map on Wolfpack multiplayer mode.
Kill 15 guards with a single cannon shot.
Complete the Encyclopedia of the Common Man.
Complete all challenges for any of the Clubs.
Win a game of Fanorona, Morris and Bowls on the Homestead.
Find all pivots and sync the Animus to the Cloud.
Exchange undamaged pelts at all different general stores.
Send a convoy to Boston, New York and the Frontier.
Hang 5 enemies by using rope darts.
Complete each of the epilogue missions unlocked after the credits roll.
Open the Temple Door and learn Desmond's fate.
Complete Sequence 12.
Have a Trainee reach the Assassin Rank.
Liberate all districts in Boston OR New York.
Complete all Naval Missions aboard the Aquila.
Complete all 12 Privateer Contracts.
Complete Sequence 11.
Craft one of Franklin's inventions to decorate your Manor.
Complete Present - Abstergo.
Complete Sequence 10.
Uncover the mystery of Oak Island.
Complete Sequence 9.
Witness a predator killing an enemy.
Loot a convoy without killing any of its guards.
Complete 50% of the Progress Tracker entries.
See all the optional characters settled at the Homestead.
After becoming fully Notorious, kill 10 Jagers before losing your notoriety.
Perform a double assassination using a musket.
Complete Present - Stadium.
Complete Sequence 8.
Complete Sequence 7.
Upgrade the Aquila.
Retrieve every page for one of Ben Franklin's Almanacs.
Explore Fort Wolcott.
Complete Sequence 6.
Complete Sequence 1 & 2.
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.
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.
Finish a multiplayer game session with each of the additional characters.
Stun 3 pursuers without dying, playing with any 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.