1. Portal 2 Achievements
  2. Party of Three achievement
Portal 2

Portal 2

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Portal 2
Jonas512

Jonas512

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16 May 11
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Jonas512

Party of Three achievement in Portal 2

Party of Three

Find the hidden companion cube in co-op test chamber

Party of Three0
20 September 2015Online/Offline - These achievements can be obtained in either an online or offline game mode.Cooperative - These achievements can be obtained by two or more players in a cooperative game mode who have met the achievement requirements.
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