but er kinda saw that he has multiple arms on his belt, so I guess there will be different arms. Also cartridges are breakable. That would mean that abilities can be lost mid-leveli think nero will use DmC mechanics, with r n l trigger for cartridges style, shoulder button for dodge, pads for cartridges variety and guns..
i doubt he'll get additional arms, unless they apply blade switch, you know, same handle but different blades..