Here is the full list of all 32 Elderand achievements.
Put an end to the cult
Defeat Dan’nuhrr
Win in the arena mode
Collect 30k gold
Defeat Eloria
Perform all rituals
Forge the Glimpse of the titan
Defeat Elderu'tamah
Free Elderu'tamah
Help Eran
Defeat the Chaos touched reject trio
Take the throne
Defeat Amon
Perform a special attack for the first time
Refine an equipment to the max
Defeat Black Virtue
Defeat Erik Zan
Defeat Sserthris
Upgrade your equipment for the first time
Find Pascal's hammer
Defeat the Chaos touched reject
Make a potion for the first time
Unlock the fast travel
Help Guam
Defeat Shakna
Defeat Rok'naar
Get to level 100
Purge all evil
Collect all the notes
Explore 100% of the map
Save Eloria
Kill 50 Mysterious Mourner