Valve recommends you sit down for this announcement, though you might also want to jump into the air and yell in excitement. If you really like playing Portal 2 co-op, that is (and who doesn't?). The ...
It’s always nice to see a friendly face. As mentioned above, there’s only one test chamber in Portal 2 that features the Weighted Companion Cube. To unlock the achievement and hear the secret GLaDOS ...
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