Retro Game Tips for Portal 2 (Xbox 360)
Achievement: Obstacle Building
When:
During game
How:
Complete all test chambers in the Excursion Funnels co-op course
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Achievement: Door behind achievement
When:
During the game
How:
When you attempt to earn the 'Ship Overboard' Achievement and you enter the door behind the filing cabinet there will be three metal doors in the hallway. Activate ALL 3 doors and Cave Johnson will talk about the tests and you will get the Achievement.
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Achievement: Easy 'Pit Boss' Achievement
When:
During the game
How:
In Chapter 9 after Wheatley's surprise, portal away from the platform just as Wheatley sends arms to crush you (Don't run away on the catwalk). Stay nearby and Wheatly will beg you to come back. Stand at the edge of the pit overlooking his trap and jump in when he asks you to and you will earn the Achievement.
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