Here is the full list of all 30 Avadon 3: The Warborn achievements.
Complete Avadon on any difficulty.
Take the throne. (Normal difficulty or higher.)
Complete the entire game without ever using a Resurrection scroll. (Normal difficulty or higher.)
Infiltrate. Learn. Escape.
Recover the great traitor's invitation.
Bring peace to the Beraza Woods with minimal bloodshed.
Read 30 codexes.
Establish your dominance over the Warborn.
Augment 20 items.
Deal with the brutal stalemate in The Kva.
Recover from Avadon everything that you need.
Free the Eternal Prisoner.
Win a Hand's loyalty.
Find the irritant that is expanding The Corruption. Remove it.
Find a route to peace with the Wyldrylm rebels.
Drive Dheless out of Khemeria.
Report Geert's fate, good or bad.
Open a secret door.
Complete the tutorial.
Steal the invitation from the servant of a living god.
Complete Avadon on Hard difficulty or higher.
Complete Avadon on Torment difficulty.
Restore Redbeard to his rightful place. (Normal difficulty or higher.)
Have Nicodemus craft six items for you.
Cement your alliance with the ogres.
On the Corruption border, fight all six Farlanders at once.
Put on your own magical disguise.
Bring Avadon knowledge of three libraries.
Kill a dragon. (Hard difficulty or higher.)
Kill a god. Not an old, feeble god. One of the tough ones. (Torment difficulty.)