HOW LONG TO BEAT PORTAL 2?
Portal 2 by Valve takes about 4 hours to beat the main story, or roughly 28 hours to complete 100%.
Time to Beat
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Sequel to the acclaimed Portal (2007), Portal 2 pits the protagonist of the original game, Chell, and her new robot friend, Wheatley, against more puzzles conceived by GLaDOS, an A.I. with the sole purpose of testing the Portal Gun's mechanics and taking revenge on Chell for the events of Portal. As a result of several interactions and revelations, Chell once again pushes to escape Aperture Science Labs.