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