Here is the full list of all 20 Eternal Dread achievements.
View Combat Tutorial
Complete 1 quest
Complete 10 quests
Complete All quests
Reach Level 10
Reach Level 30
Reach Level 50
Reach Level 100
Defeat The Necromancer
Raid the Ogre's Camp
Defeat Gu Inw Za
Defeat The Head Cutter
Entering the Lost Citadel
Re-Status for the first times
Activate all Waypoints
Defeat Yapiz
Defeat Atis
Defeat Tuyen
Defeat Pisaj
Defeat all Elder Fiends