how about this?
The entire body is medium-weight and all-rounded, expect for the legs, which are heavy to prevent being tipped over. the feet are very tiny, around the same diameter as an orange, so it can adapt to any terrain. There are also rockets attached to the back of its legs, so it can traverse easily. It has a rocket launcher attached to its back, in the event that its rifle can’t pierce something. It also has a flamethrower in it’s right hand, to burn down anything that would otherwise be too weak for it to waste a bullet on, and the rifle has a special harpoon/chainsaw hybrid attached to it. The flamethrower’s gas tank is inside of the stomach, so it cannot be destroyed and make an explosion. It’s ammunition is stored neatly inside a compartment on it’s back, which has enough ammunition for around 20 uses of all 4 rocket launchers, as well as enough ammo for the rifle to fire nonstop for 2 days.