In the center of the maze there is a small pedestal with a series of levers on it. It’s basically a tic-tac-toe board, and you have to pull six levers without ever winning the game. If you complete one line of three in a row, it opens up the large sarcophagus and unleashes the monster within it. If you pull six levers without that happening, the door to the second half of the maze opens.

“Are you sure you want the fight?” I ask, looking at the puzzle. “It won’t be easy, and I’m ...