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