Here is the full list of all 72 For The King (Windows) achievements worth 1,000 gamerscore.
Honor 15 Stone Heros
Unlock 20 items from the Lore Store
Defeat the Hangman
Defeat Deimos
Defeat Lucky
Defeat Coal Heart
Defeat the Bandit King
Break a sieged town
Help Hildebrant retrace his steps
Use 10 candies
Solve the King's Maze
Defeat the Mind Bender
Defeat the Lich's Crypt
Kill a thief attempting to flee
Clear the Forgotten Cellar
Purge the Glittering Mines
Break a weapon
Clear a Cave
Defeat the Cultist Camp
Complete 1 Side Quest
Honor 3 Stone Heros
First party wipe
Have 300 Gold
Reach the bottom of Hildebrant's Cellar
Unlock 1 item from the Lore Store
Defeat Disciple
Revive a party member
Enter Hildebrant's Cellar
Clear both Demon Caves
Defeat Vexor on Apprentice
Defeat Vexor on Journeyman
Defeat Vexor on Master
Purge the Buried Temple
Clear 5 Sea Caves in 1 game
Clear the Flooded Crypt
Escape the Mage Dungeon
Survive the Lava Dungeon
Defeat the Chaos Beast
Complete 50 Side Quests
Have 1500 Gold
Have 5000 Gold
Defeat the Royal Droll
Defeat the Foul Priestess
Defeat the Old One
Honor 50 Stone Heros
Kill the Kraken
Smash 150 Skellys
Topple 15 Crag Monsters
Unlock 40 items from the Lore Store
Reach the top of Harazuel
Slay the dragon at the top of Frostbite Peak
Defeat the Yeti, free her "prisoner"
Unlock the armory
Kill 5 Snowmen
Use 100 herbs
Reach the Inferno
Purge all 4 Water Temples
Defeat the Sea King
Kill 10 enemies with Firearms
Defeat the Songstress
Find Captain Greenbeard's Ship
Win a game of Gold Rush
Kill 1000 Enemies
Murder 30 Hags
Defeat 3 Triclops
Fly in the Air Balloon
Crush 25 Imps
Defeat 100 Beastmen
Defeat 10 Mimics
Find Bradach's Cabin
Kill 30 Fishfolk
Get killed by a suicidal enemy