Shhwonk Fortress is the first "dungeon" you'll find in Paper Mario: The Thousand-Year Door's Petalburg. After a series of tough battles, your last trial awaits you in the form of Quiz Thwomp. Fortunately, you won't have to battle him. Instead, you'll be asked five trivia questions with dire consequences if you fail three in a row. Quiz Thwomp appears twice in The Thousand-Year Door, but failing the quiz in Chapter 1 generally isn't recommended due to your low level and HP.