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