"Kael! Don't unlock the door—overload the core!" Elias yelled, parrying Marcus’s blow.
The Labyrinth began to groan. The "Champion" wasn't going to be a person; it was going to be the truth. As the reactor reached critical mass, the ceiling of the underground fortress cracked, revealing the real sky for the first time in months. In the final explosion, the Labyrinth collapsed inward.
The Heart was a massive, open arena where the walls were made of screens showing the Architects placing their bets. The exit was a single golden elevator in the center.