Adeptus Mechanicus

Skitarii Vanguard, featuring helmets and rebreathers, obliterate foes with radium carbines. Each trooper is sealed in heavy, industrialised Skitarii warplate, emblazoned with the symbol of the Adeptus Mechanicus, bristling with data-collecting sensors, antennae and environmental monitors.

Adeptus Mechanicus: Ironstrider Ballistarius (59-12)
With a distinctive two-legged walking tank-shape, the artillery platform known as the Ironstrider Balistarius is a fearsome sight indeed. Gyroscopically balanced, with downlinks providing them with the sum knowledge of their enemies, the deadly accuracy of the Ironstrider Ballistarius would be the stuff of legend, were any survivors ever left to recall it.