Here is the full list of all 37 Fighting Fantasy Legends achievements.
Complete 5 Quests
Rescue the Prisoner in Firetop Mountain
Be Victorious in Combat 20 Times
Play any dice game at the Zengis Gambling Hall
Find the Lotus Flower
Dice with Death in the House of Skulls
Unlock a Title
Upgrade any Die
Defeat the Goblins or the Troll in the Spotted Dog Tavern
Kill the Red Dragon in Firetop Mountain
Kill all of the Pirates on the Pirate Ship
Have a Curse Removed
Beat the Strongman in Port Blacksand
Open Zagor's Treasure Chest in Firetop Mountain
Find the Legendary Pirate Treasure
Kill Zagor the Warlock
Complete the Creature Codex
Pass 10 Skill Tests
Gain 10 Titles
Escape from Jail in the Citadel
Kill Balthus Dire
Win a Game of Baysball
Find the Black Pearls
Win a Fight That You Start With 1 Stamina
Kill Zagor, Balthus Dire and Zanbar Bone on Adventurer Difficulty
Fully Upgrade Your Luck Dice
Fully Upgrade Your Skill Dice
Carry the Best Weapon and Armour Cards
Find the Hag's Hair
Kill Zagor, Balthus Dire and Zanbar Bone on Legend Difficulty
Pass 10 Luck Tests
Kill Zagor, Balthus Dire and Zanbar Bone on Hero Difficulty
Find the Silver Throwing Knife
Find the Spider-Man
Get a Tattoo
Unlock all Titles with the Same Character
Kill Zanbar Bone