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