Jurie Horneman, who worked as a producer on the game prior to its transfer to Rockstar London, wrote in a post on the Intelligent Artifice blog that he wants to "correct an inaccuracy in the game's credits, name the over 55 missing Rockstar Vienna employees who worked on the game from January 2004 until the studio was closed down on May 11 2006."
"To the best of my knowledge, apart from the people who briefly went to Rockstar London to assist with development there, nobody from Rockstar Vienna is mentioned in the credits of Manhunt 2," he added.
After providing his own list of credits for the Rockstar Vienna effort, Horneman continued, "I do not want to denigrate what Rockstar London did on Manhunt 2, but as far as I can tell (from analyzing screenshots, previews, etc.) the majority of the work we did at Rockstar Vienna is in the released game. Rearranged and modified, but it's there."
"I am disappointed and outraged that Rockstar Games tries to pretend that Rockstar Vienna and the work we did on Manhunt 2 never happened - the work of over 50 people, who put years of their lives into the project, trying to make the best game they could," he said. "I am proud to have been a part of that team."