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