Here is the full list of all 30 Avadon 2: The Corruption achievements.
Complete Avadon 2 and take Redbeard's place. (Normal difficulty or higher.)
Complete Avadon 2 on Normal difficulty.
Complete Avadon 2 and remain loyal to Redbeard. (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.
Kill Vardegras. (Normal difficulty or higher.)
Investigate another Tawon temple.
Fully explore the abandoned workshop outside Troezen.
Conclude your business at Konstina's camp.
Have Nicodemus complete six artifacts for you.
Kiss somebody.
Eat a cake.
Find Eye Dymas and help her return to safety.
Get away from the lair of Vardegras.
Return two honor tokens to Avadon.
Hunt down Chabon and bring him to justice.
Escape a Tawon temple alive.
Unlock 30 codex entries.
Buy two houses. Yes, two!
Defeat the ogres and learn the rebels' secret.
Augment 20 items.
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.
Kill Krymhylas, Lord of Winds. (Hard difficulty or higher.)
Kill a god on Torment difficulty!