SILVER KEY #16
Opposite the Demon Door in Witchwood Stones, you’ll spot a small pond. Fish here to pluck another Silver Key from the murky depths.
SILVER KEY CHEST #5
KEYS REQUIRED: 15
CONTAINS: Health Augmentation
This chest lies behind the Witchwood Stones’ Demon Door, so you’ll need to complete the Find the Archaeologist quest to reach it.
DEMON DOOR #10
CONTAINS: Books, Chainmail Leggings, Health Augmentation, Howl Tattoo, Resurrection Phial, Ruby, Sapphire
RIDDLE: “I only open to those who know my name. If you know it, find and hit the magic stones to spell it out. Only one person knows my name, but I doubt you’ll find him, even at the Temple of Avo.”
Simply smack the nearby Witchwood Stones to spell out the door’s name - which, somewhat improbably, is “HITS.” Note that rearranging the letters to form a rather more vulgar word causes two angry Balverines to appear. That’ll teach you.