This is the sixth part of a full gameplay walkthrough of Valve’s Portal 2 on the XBOX 360, Playstation 3, and PC. This video includes Chapter 2/3
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« Portal 2: Walkthrough – Part 5 (Chapter 2 Lvl. 1-7) Portal 2: Walkthrough – Part 7 (Chapters 3/4 Lvl .13-18) »
