Here is the full list of all 56 Eador. Masters of the Broken World achievements.
Encounter Ul-Dagan.
Conquer a shard after looting 10 locations with dragon guards.
Forge an alliance with the centaurs.
Encounter Dariol.
Capture a shard in less than 45 turns.
Encounter L'Anshar.
Forge an alliance with the halflings.
Encounter Stenriya.
Encounter Oumm.
Forge an alliance with the elves.
Encounter Vianta.
Fight off an attack by another Master against your shard.
Encounter Doh-Gor.
Conquer a shard after gathering at least one set of 4 or more items.
Forge an alliance with the dwarves.
Encounter Beleth.
Conquer a shard after constructing all available buildings in the stronghold.
Conquer a shard after exploring over 1000% of uncharted land across the provinces.
Receive medal with a unit.
Construct all possible buildings in the stronghold.
Destroy the guards of a store in province.
Slay a dragon.
Survive with a hero the annihilation of his army.
Eador remembers.
Conquer a shard after unveiling the entire map.
Conquer a shard without losing any units serving in the heroes' armies.
Conquer a shard without losing any battles involving the heroes.
Capture over 50% of provinces on a shard.
Reach 20th hero level.
Encounter Oinor.
Capture your first shard.
Begin your first siege.
Reach 10th hero level.
Resurrect a slain hero.
Conquer your first province.
Explore a province to 100%.
Win your first tactical battle.
Earn first hero level.
Talk to Zarr in the Astral.
Encounter Erdu.
Encounter Dorikos.
Encounter Adrageron.
Encounter Ranadil.
Encounter the Nameless.
Encounter Magnus.
Finish the game with «Destroy all life» ending.
Construct magic school of fourth tier.
Lose a battle for the shard due to an uprising in your capital province.
Lose the campaign to Chaos invasion.
Forge an alliance with the orcs.
Forge an alliance with the goblins.
Forge an alliance with the lizardmen.
Summon over 50 skeletons or zombies in a battle for the shard.
Encounter Herskil.
Conquer a shard after winning 10 fights on the Arena.
Conquer a shard after plundering over 1000 gold from the provinces.