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