Full list of all 24 Quest of Dungeons achievements worth 1,000 gamerscore. It takes around 15-20 hours to unlock all of the achievements on Xbox One.
Completed Game with NecroDancer
Completed a Custom game in Hard or above with 10 floors
Completed Game with Warrior
Purchased all stock from a shopkeeper
Collected 500k Gold
Completed Game in 30m
You listened until the end
Completed Game with Wizard
Completed Game with Shaman
Completed Game in Normal
Complete Game in Hard
Complete Game in Hell
Completed Rackan Mansion
Defeated 20 Bosses
Completed 50 quests
Defeated 3 ghosts of a past Hero
Found 50 hidden stash
You Finished The Game in Easy Mode
Completed Game with Assassin
Completed a quest
Defeated a Boss
Unlocked a door
Unlocked a Chest
Disarmed a trap that had loot!