This is a segmented world-record speedrun of Portal 2 Single Player mode, completed in 57:15.117, done in a total of 90 segments.
Starting all the way back in May 13th, 2012, a team of 6 runners have worked on this run, finally finishing now.
List of runners in order of appearance:
This run is done on the latest version of the game. This means that everything performed in this run is possible to do on the current Steam version.
Main thread: http://sourceruns.org/index.php?topic=1881