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