 Most reviewers praised the writing and voice acting in the game . Entertainment Weekly 's Dan Stapleton of PC Gamer was able to predict many of the plot twists within Portal 2 's story but " still looked forward to witnessing exactly how the characters would react " ; he praised the development of the characters , as " their charm makes what would otherwise be an empty and lifeless world feel boisterous and alive " . The characters were well received . Oynett wrote that Merchant 's " obvious enthusiasm for the role benefits the game " and that the " consistently clever writing perfectly complements the onscreen action " . Game Informer 's Adam Biessener considered Johnson to be an even better character than GLaDOS , and praised the game 's " pitch @-@ perfect delivery " and " brilliant comedic timing " . In contrast , Peter Bright of Ars Technica wrote that compared to the loneliness and despair he felt while playing the first game , the characters , Wheatley and GLaDOS , lost some of this feeling and " the inane babble served only to disrupt the mood " . 
