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