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