I recommend doing this after earning No Argument Here for defeating the Queen of Quills with no deaths otherwise you'll have to wait until New Game+ to get it.
If you unlock this achievement before defeating the Queen of Quills, your game auto-saves when you meet Quarble and voids the No Argument Here achievement.
If you've defeated the Queen of Quills, exit the Marsh and enter the Searing Crags. Enter The Shop to trigger an auto-save and then go die. Press "A" or "Space bar" to continue and you'll be outside The Shop and introduced to Quarble.
Death screen.
Meeting Quarble.