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