I got bored and decided to do another one now =]
This one was a lot easier for me because I didn't try and use the same object for the whole thing. The guns were made from boxes and cylinder, the main body and the feet were boxes, the little hoses on the back i used a bend modifier on a cylinder and extruded the edges and for the waist section i extruded the edges on a cylinder. I'm definately really happy on how it turned out.