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