The Eternal Lords Expansion Add-on for Age of Wonders III has 21 achievements.
Win any level with a Frostling leader
Win any level with the Necromancer leader class
Animate a ruined town
Recruit a Necromancer hero
Summon an Arch Angel
Max out the race governance for one race in a single game
Win the Eternal Lords campaign for the Undead
Win the Eternal Lords Campaign for the Shadowborn
Win the Eternal Lords Campaign for the Frostlings
Kill a leader with Invoke Death
Research Harbingers of Death
Summon a Dread Reaper
Win any level with a Tigran leader
Have six Tigran cities in a single game
Summon a Fallen Angel
Win any level with a Shadowborn leader
Win any level with a Keeper of Peace leader
Summon a Chthonic Guardian
Win any level with a Grey Guard leader
Obtain a Reef Colony
Win a unifier victory