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