Penetrates plasteel

Russ jabbed at the drone's reactor. Power plants were a weakness in all fighting machines, including legionary battleplate. The drone's was well armoured. He thrust the spear tip at the slot of a vent, where mesh protected pipes and casings of a uniform, dirty oil brown. The machine spun around on a ball point at its waist, swatting the spear out of the way with one fist, the second falling hard behind to aim at Russ' head. The primarch ducked , sweeping the spear at the machine's feet as they tracked round to match the changed direction of the torso. The shaft rang off chunky greaves, scraping a shallow groove into the metal. The machine stumbled a little at the force of the blow, but checked its fall resolutely at the primarch. Russ jabbed at its chest. The umpowered spear dinged into the plasteel, Russ' godlike strength knocking out a divot of metal. The machine rocked back on its heels, recovered again and powered on, swinging one fist after another in blurring arcs. Russ ducked one, and the second, attacking the machine with controlled jabs of his weapon in between. He was a graceful warrior. No movement was wasted.

Wolfsbane