Here is the full list of all 16 One More Dungeon trophies - there are 2 bronze, 3 silver, 10 gold and 1 platinum.
Collect all the trophies
Complete the game with "No margin for error" or "Curse" mutator
Squash 25 bugs
Complete the game with "Fog" or "Broken cartridge" mutator
Put the items in all the inventory slots
Spend 50 coins
Buy all the mutators
Complete the game
Complete eight levels
Kill the Ancient Necromancer
Complete five levels
Kill the Elder Flower
Finish the level in under 3 minutes
Die after drinking the poison
Complete the first level
Start the game with any mutator