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