Portal 2: Co-op Walkthrough - Part 2 [1080p HD] (PC/PS3/XBOX 360)
If you want to buy Portal 2: http://amzn.to/PortalII
This is the second part of a complete gameplay walkthrough of the co-op in Portal II on the Playstation 3, XBOX 360, and PC. Played on th XBOX 360.
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Developer: Valve Corporation
Publisher: Valve Corporation