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