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