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