After several battle simulations and live fire exercises, One conclusion became crystal clear. It's firepower although adequate for taking out enemy infantry, hardsuits, and lightly armored vehicles wouldn't be enough should it come across a heavy or assault class war machine. In lieu of this fact, the WU (weapon upgrade) variant sports several new weapons. First is a quad-barrel auto cannon with a 100 round drum capable of firing single, double or four round bursts. The second is a tri-barrel laser cannon that can be launched and act as a independent aerial attack drone. It can function for up to six hours before returning to its docking mount. Lastly a pair of vibro-blades were attached to each arm/cannon for meele combat. With these upgrades, the Golem can now stand toe to toe with much larger units and inflict serious damage on any opponent.