亞爾多

http://www.pcgamer.com/2011/10/03/portal-2-dlc-out-wednesday-adds-new-co-op-missions-challenge-mode-and-leaderboards/?ns_campaign=article-feed&ns_mchannel=ref&ns_source=steam&ns_linkname=0&ns_fee=0
說好的暑假DLC到10月先出...