Portal 2 Co-op Guide: Beating Chamber 9-4 in 60 Seconds
Posted: April 25, 2011
Want to learn how you can beat Chamber 9: Course 4 in 60 seconds in Valve's Portal 2? Courtesy of Rune & Peter, learn how you can beat Chamber 9-4 in 60 seconds. Check out more of their portal 2 guides on their Youtube Channel, SoftlyAdverse.