After countless times of trying and dying in the jaws of this massive, monstrous worm, you've finally slain it. But, there's a problem: the bag of glorious loot you've come to expect after defeating a creature of great power hasn't dropped.
You look around, befuddled as to where it could be. Suddenly, the ground begins to shake violently, and you hear a deep, booming laughter fill the world. Then, the laughter stops, and words replace it in the same deep tone: "It's not over yet, kid."