Here is the full list of all 30 Avadon 2: The Corruption achievements.
Complete Avadon 2 on Normal difficulty.
Complete Avadon 2 and take Redbeard's place. (Normal difficulty or higher.)
Reach the endgame without ever using a Resurrection scroll. (Normal difficulty or higher.)
Have Nicodemus complete six artifacts for you.
Investigate another Tawon temple.
Show that there is nowhere the Hands of Avadon cannot reach.
Fully explore the abandoned workshop outside Troezen.
Augment 20 items.
Find Eye Dymas and help her return to safety.
Conclude your business at Konstina's camp.
Kiss somebody.
Hunt down Chabon and bring him to justice.
Eat a cake.
Get away from the lair of Vardegras.
Escape a Tawon temple alive.
Unlock 30 codex entries.
Buy two houses. Yes, two!
Return two honor tokens to Avadon.
Defeat the ogres and learn the rebels' secret.
Find out where Miranda went.
Explore an abandoned base.
Become a Hand of Avadon.
Find a secret door.
Survive an unexpected attack.
Complete Avadon 2 on Hard difficulty.
Complete Avadon 2 on Torment difficulty.
Complete Avadon 2 and remain loyal to Redbeard. (Normal difficulty or higher.)
Kill Vardegras. (Normal difficulty or higher.)
Kill Krymhylas, Lord of Winds. (Hard difficulty or higher.)
Kill a god on Torment difficulty!