Here is an armored and weaponized land drone. Equipped with rockets, mortars and a vulcan cannon. Also equipped with a sensor pod and a couple of cargo containers.
Parts are separated for ease of manipulating the model. I've included a couple of alternate renders to show the missile pod rotated, mortar doors open and closed and sensor pod rotated and lowered. For those that use ZBrush, I've included an image showing the polygroups.