First you’ll have to crawl through a tunnel filled with broken glass. Don’t move too quickly or else you’ll get hurt too much and you’ll die. When you reach intersections in the pipes, light a match and continue crawling in the direction the flame is pointing. When you reach the end, you’ll have to make it through a transformer maze.
When you jump down to the transformer maze, you can either go through the door that says "Coward" or fail enough of the QTE's while trying to get through the maze. If you choose to walk through the door, select the Leave prompt.
Replay Chapter: The Butterfly