Get me out of here! Escape from the underground world

How did you end up in my room?! Frog slime and a dead rat, that’s all I needed! I had just settled comfortably on my couch and wanted to play a computer game when you suddenly appeared… a human in the underground world! Simply unimaginable! We need to get you home as quickly as possible, or I, Shmygocephalus the Seventeenth, will have monstrous problems. I suspect this won't be easy: we'll have to go through several howling quests and think hard (if you have a brain, of course). On the other hand, I would hate to become the subject of ridicule among my demon friends… In short, there’s no time for pondering and puffing. Quickly open the first page, and I will lead you to freedom through all the circles of hell, uh, my magical world!