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On October 4 Valve will release new content for Portal 2 for all versions of the game. The content pack, titled Peer Review, will include more cooperative challenges and again feature GLaDOS, which means you can expect to solve puzzle while getting pelted with insults.
A challenge mode is also being included which will support solo and co-operative play, as well as leaderboards so you can look at the scores of your friends and make fun of them.
As Valve previously revealed, the Peer Review content will be made available for free.
source
A challenge mode is also being included which will support solo and co-operative play, as well as leaderboards so you can look at the scores of your friends and make fun of them.
As Valve previously revealed, the Peer Review content will be made available for free.
source
