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