Valve's Chet Faliszek told VideoGamer.com that Portal 2 will have two final sequences of the claims, one for single player and the other for the co-op. "Both the final sequences include something special, so we had to do something doubly impressive." Faliszek also said that the game will not be by proceeding in various stages, too difficult.

"It 's a whole, but not be too difficult. We do not like to think that people watch the final on YouTube because of the difficulty." Please note that Portal 2 will be released April 21.