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