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