Unfortunately, as described in the title only a Xbox controller for Windows simultaneously with this game must use whatever means that I have to either buy another controller or playing with the keyboard (2 player game). Unfortunately, very ugly because even the advantage of the Xbox controller that you only need a USB port so lapses.
On the part of Ubisoft, there was only the opinion (after I wrote the support) that the problem is known and can not be repaired / is. Is very unfortunate because I would have a publisher like Ubisoft have expected more.