1. Portal 2 Achievements
  2. Rock Portal Scissors achievement
Portal 2

Portal 2

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20-26h
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Rock Portal Scissors achievement in Portal 2

Rock Portal Scissors

Win 3 co-op games of rock-paper-scissors in a row

Rock Portal Scissors0
Online/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.Cumulative - - These achievements are obtained by repeatedly performing the same action or set of actions over time, but progress can diminish.

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