I read in a review that the mouse does only support the camera movement and is not supported otherwise. It was planned to do so but UBI decided against it. Is there anybody out there who can play this game using the mouse buttons?

Just for making the GamePad alternative a bit juicier, here's a patch so that it works ;): https://code.google.com/p/noser-sandbox/downloads/list
I can't really exactly remember, but as far as I can, there only was camera support ;)