1635. Humans and infernal creatures confront each other for many months in the underground tunnels of New Jerusalem. These countless fierce battles eventually leave the warriors on both sides completely battered. Who can save the day? With De Profundis, the Siccaria, powerful warriors, reinforce the human army, and terrible rabid hounds join the camp of the underworld. New rooms with new effects and twelve Machiavellian scenarios await you in a hellish expansion!