Here is the full list of all 30 Avadon 2: The Corruption achievements.
Complete Avadon 2 on Normal difficulty.
Complete Avadon 2 on Hard 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.)
Show that there is nowhere the Hands of Avadon cannot reach.
Have Nicodemus complete six artifacts for you.
Investigate another Tawon temple.
Fully explore the abandoned workshop outside Troezen.
Conclude your business at Konstina's camp.
Kiss somebody.
Find Eye Dymas and help her return to safety.
Kill Vardegras. (Normal difficulty or higher.)
Get away from the lair of Vardegras.
Return two honor tokens to Avadon.
Eat a cake.
Kill Krymhylas, Lord of Winds. (Hard difficulty or higher.)
Hunt down Chabon and bring him to justice.
Augment 20 items.
Escape a Tawon temple alive.
Buy two houses. Yes, two!
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 Torment difficulty.
Complete Avadon 2 and remain loyal to Redbeard. (Normal difficulty or higher.)
Unlock 30 codex entries.
Kill a god on Torment difficulty!