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