Here is the full list of all 62 Ancestors Legacy achievements.
Claim all the wells in the mission 'Impatient Vengeance'
Complete Salah ad-Din Yusuf's campaign
Kill all the Christian preachers in the mission, 'Siege of Jerusalem'
Claim all the villages and expand your base in 30 minutes in 'The Final Straw'
Kill 5 enemy squads in 1 minute only using Grenadiers
Don't lose any squads in the mission 'Battle of The Horns of Hattin'
Complete all the quests with only one Hassassins squad in Akka
Win a match on Desert and Wilderness, Crusade of Anarchy or Scorching Quarrel
Destroy the enemy's Town Hall using Scorpions
Win a match as the Saracens in Anihilation Mode
Kill an enemy hero in a Multiplayer or Skirmish match with a Hassassin squad
Start Salah ad-Din Yusuf's campaign
Finish the Battle of Lidzbark in less than 25 minutes
Defend Lubawa only using ranged units
Disarm all the traps without being detected in Natangia forest
Complete Konrad's campaign
Capture all the villages near Christburg
Get rid of all the bandits and save all the villagers in Pokarvis
Start Konrad's campaign
Complete Boleslav's campaign
Don't let the enemy attack any of the catapults from your team
Destroy all enemy ships
Find out what happened to the villagers
Don't let any of the enemy convoys pass through the outpost
Sneak into the enemy base undetected
Kill 2000 peasants
Complete Mieszko's campaign
Capture the village of Kopytko
Recruit each type of unit in the game at least once
Complete Rudolf's campaign
Pick up all armors scattered behind Vienna's walls
Defeat each type of unit in the game at least once
Kill Harald in less than 5 minutes at Stamford Bridge
Complete Harold's campaign
Lose a match in Multiplayer or against AI
Win a match against an AI on Insane difficulty
Complete Edward's campaign
Deliver 5 or more catapults before night-time at Wells
Complete Rurik's campaign
Capture and hold all villages at Izborsk
Detect and destroy five enemy traps
Unlock a veterancy ten times
Win a match in Multiplayer or against AI
Win a Multiplayer match or AI Skirmish in less than 8 minutes.
Start a match in Multiplayer or against AI
Complete Ulf Ironbeard's campaign
Reach maximum level with any squad
Destroy any building with a siege machine
Destroy a village with Gold defense
Send peasants to work at a resource point 50 times
Raise the defense level of your village
Help at least 8 drakkars survive the siege before Lindisfarne
Complete the base building training mission
Raise the alarm in your village
Complete the economy training mission
Specialize ten squads
Replenish a squad ten times
Raise a squad's armor to its maximum level
Complete the squad training mission
Make an enemy trigger a trap you built
Defeat an entire enemy squad with ranged attacks only
Complete the basic training mission