Secret code
This Too Should Have Been Unlocked By Default
Type thistooshouldhavebeenunlockedbydefault in the Secrets menu. Unlocks Ars Gouda.
Type this
Type it exactly as written, lowercase and unspaced, on a standard QWERTY layout. There is no text box; the menu listens for the keys.
What it unlocks
Before it works
The Secrets menu stays shut until you own the Forbidden Scrolls of Morbane, hidden in The Bone Zone.