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