By Bad Seed
If you want to buy Portal 2: http://amzn.to/PortalII
This is the 19th part of a full gameplay walkthrough of Valve's Portal 2 on the XBOX 360, Playstation 3, and PC. This video includes the second part of Chapter 9: The Part Where He Kills You (Part 2). Played on the Xbox 360.
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Be sure to check out the credits for the extra cinematic at the end of the song.
Developer: Valve Corporation
Publisher: Valve Corporation