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