Here is the full list of all 56 Eador. Masters of the Broken World achievements.
Encounter Ul-Dagan.
Encounter Dariol.
Encounter L'Anshar.
Forge an alliance with the elves.
Eador remembers.
Encounter Stenriya.
Forge an alliance with the centaurs.
Forge an alliance with the dwarves.
Encounter Oumm.
Conquer a shard after unveiling the entire map.
Conquer a shard after looting 10 locations with dragon guards.
Destroy the guards of a store in province.
Slay a dragon.
Encounter Vianta.
Fight off an attack by another Master against your shard.
Forge an alliance with the lizardmen.
Encounter Doh-Gor.
Conquer a shard without losing any units serving in the heroes' armies.
Encounter Beleth.
Conquer a shard after exploring over 1000% of uncharted land across the provinces.
Conquer a shard after gathering at least one set of 4 or more items.
Forge an alliance with the halflings.
Reach 20th hero level.
Conquer a shard after constructing all available buildings in the stronghold.
Construct all possible buildings in the stronghold.
Capture a shard in less than 45 turns.
Conquer a shard without losing any battles involving the heroes.
Capture over 50% of provinces on a shard.
Encounter Oinor.
Capture your first shard.
Begin your first siege.
Survive with a hero the annihilation of his army.
Reach 10th hero level.
Resurrect a slain hero.
Explore a province to 100%.
Conquer your first province.
Receive medal with a unit.
Earn first hero level.
Win your first tactical battle.
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.
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.