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