How to beat the challenge
Gold can be found in Chests, on the ground after all the enemies in a room have been killed and by destroying decorations. The Pirate sword grants one gold for every enemy killed and item destroyed, the Bottomless pouch gives one gold for every new room entered and the Curse of Midas turns food into gold. Items to avoid are Goldjaw, which makes gold heal the player but prevents them from collecting it, and the Curse of Midas which turns all the gold the player is carrying, and any they come into contact with, into stone.
Playing on casual difficulty mode will make completing this achievement easier, as it will be easier to get farther in the game, collecting more gold.
You start with 25 gold.