Here is the full list of all 54 Fallen Enchantress: Legendary Heroes achievements.
You defeated a sovereign in battle!
Play for 40 hours.
Recruit Raza the Wild
Win and have at least 3,000 population.
Win by defeating all of your opponents.
Complete 10 quests in a single game.
You've managed to slay Vetrar!
Recruit Nen Ratcatcher
Get a city to level 5 in one game.
Make 1000 gildar from selling items in shops.
Play for 20 hours.
Buy an item from a shop.
You've managed to slay Torax!
You've managed to slay Delin!
Tap 10 resources in a single game.
You've managed to slay Morian!
Reach level 15 with a champion.
Design a unit.
Not since Peter MacNicol has one been slain!
Recruit Ascian
Play for 10 hours.
You have captured an enemy city!
Control 5 cities in a single game.
Play for 5 hours.
Reach level 5 with a champion.
Complete a quest.
Win by having the highest score by the turn limit.
Explore 10 goodie huts in a single game.
Your Fame has lead a hero to your cause.
You killed a monster!
You have defeated an army!
All nations start with one.
Create a custom sovereign.
You've managed to slay Abeix!
Awarded for completion of the Legendary Hero scenario.
Win by completing the Master Quest.
Win by casting the Spell of Making.
Win by forging an alliance with all players.
Win as Altar.
Win as Gilden.
Win as Pariden.
Win as Tarth.
Win as Kraxis.
Win as Magnar.
Win as Resoln.
Win as Yithril.
Play for 100 hours.
Defeat a faction.
Recruit Mausolos
Recruit Kasst
Recruit Tuatha
Recruit Gallowman
Win as Capitar.
Win as Umber.