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. Push to cycle around and see which direction is not electrified. The QTE’s for this one are hard and you’ll need some dexterity in your hands you probably didn’t know you have. If you're having trouble, use the map below to get through the maze (thanks to NEFFR for the quicker route).
Note: If you play on the lowest difficulty, then the QTE's will be much easier. You'll still be stretching your hands, but they'll be easier.
Replay Chapter: The Butterfly