Here is the full list of all 57 For The King trophies - there are 46 bronze, 9 silver, 1 gold and 1 platinum.
Collect all trophies in the game
Escape the Mage Dungeon
Defeat Vexor on Journeyman
Defeat Vexor on Master
Defeat the Songstress
Honor 50 Stone Heroes
Smash 150 Skellys
Defeat the Chaos Beast
Topple 15 Crag Monsters
Survive the Lava Dungeon
Win a game of Gold Rush
Unlock 40 items from the Lore Store
Complete 50 Side Quests
Slay the dragon at the top of Frostbite Peak
Defeat the Yeti, free her "prisoner"
Unlock the armory
Defeat the Sea King
Purge all 4 Water Temples
Find Captain Greenbeard's Ship
Have 5000 Gold
Defeat the Old One
Reach the Inferno
Reach the bottom of Hildebrant's Cellar
Use 100 herbs
Honor 15 Stone Heroes
Defeat the Bandit King
Defeat Coal Heart
Clear the Flooded Crypt
Kill 10 enemies with Firearms
Unlock 20 items from the Lore Store
First party wipe
Revive a party member
Kill 5 Snowmen
Break a weapon
Break a sieged town
Help Hildebrant retrace his steps
Defeat Vexor on Apprentice
Reach the top of Harazuel
Kill the Kraken
Defeat Lucky
Defeat the Royal Droll
Purge the Buried Temple
Clear both Demon Caves
Defeat Deimos
Have 1500 Gold
Solve the King's Maze
Clear 5 Sea Caves in 1 game
Use 10 candies
Defeat the Lich's Crypt
Kill a thief attempting to flee
Defeat the Mind Bender
Defeat the Hangman
Clear the Forgotten Cellar
Defeat the Foul Priestess
Purge the Glittering Mines
Defeat Disciple
Defeat the Cultist Camp