Here is the full list of all 29 Dungeons & Darkness achievements.
Complete all of Anselm Tenant's quests.
Defeat the red dragon.
Complete all of Homer Arling's quests.
Complete all of Doug Gouton's quests.
Complete all of Meliel Flory's quests.
Complete all of Ratovic Lampard's quests.
Defeat the dragon zombie.
Complete all of Carl Walters' quests.
Acquire 12 skill books.
Acquire 60 collectables.
Complete all of Harmon Redford's quests.
Defeat the gargoyle.
Place 11 pieces of furniture.
Acquire 40 collectables.
Acquire 6 skill books.
Defeat the black dragon.
Acquire 20 collectables.
Complete all of Aaron Ford's quests.
Place your first piece of furniture.
Complete your first quest.
Enter a dungeon for the first time.
Place all 22 pieces of furniture.
Acquire all 87 collectables.
Get the Proof of Royalty.
Get the Royal Sword.
Acquire all 18 skill books.
Beat the game in NORMAL mode
Beat the game in HARD mode
Beat the game with the commoner class in HARD mode