Here is the full list of all 50 Disciples: Liberation achievements.
Reach Level 80.
Face the being at the Altar of Ascension.
Complete the Nephilim skill tree.
Complete the Magic skill tree.
Complete the Warrior skill tree.
Complete Sebastien's story.
Finish the main story of the Nexus.
Defeat Mortis.
Perform your first ultimate skill.
Complete Sharlea's Questline.
Finish the main story of Queen's Nest.
Equip Avyanna with only legendary items.
Complete Ormeriel's story.
Acquire any faction's Legendary Armor.
Maximize your reputation with a faction.
Complete Ejamar's story.
Complete Illmeren's story.
Complete Orion's story.
Finish the main story of the Return to the Castle Hale.
Complete Corisandre's story.
Finish the main story of Barat Nor.
Complete Melendrach's story.
Complete Bagthal's story.
Acquire your first Tier IV spell.
Upgrade a Legendary item to +5.
Invest 100,000 gold in Yllian.
Maximize the level of Yllian's castle.
Finish the main story of the Lows.
Complete a romance with any companion.
Finish the main story of Atellean.
Become Friendly with every faction.
Finish the main story of the Path of Flesh and Flame.
Finish the main story of Wotan's Grave.
Upgrade your first item.
Finish the main story of Veranto'or.
Acquire your first legendary item.
Cast 100 spells.
Recruit Melendrach.
Recruit Sharlea.
Recruit Sebastien.
Win a battle without taking damage.
Recruit Illmeren.
Finish the main story of the Whitelands.
Load from a previous quicksave.
Win 100 battles.
Finish the main story of Heurik.
Finish the main story of the Plains of Widows.
Finish the main story of Grayleaf.
Spend the night with another character.
Complete the Prologue.