he Cerberus is a rare variant of the Spartan chassis that uses its massive hull to mount a prototype neutron laser projector, as well as the sizable arc-reactors and radiation shielding needed to operate the weapon. The neutron laser is poorly understood by the adepts of the Mechanicum, but stands among the most effective anti-tank weapons available to the Space Marine Legions, capable of punching through the strongest plating and shorting out its target’s systems with bursts of radiation. The terrible toll the Cerberus takes on its crew is regarded by many commanders as a necessary cost,