Piloted by sinners and heretics still able to seek redemption, Penitent Engines charge towards the foe heedless of danger, knowing that only through death can absolution be earned. The arms of the engine, mounted with enormous flamers, blaze a trail of fiery destruction as it thunders forwards. Upon reaching the enemy's battle lines, the pilot is pumped with chemical and synaptic signals that induce unfathomable guilt, forcing them into a rampage that leaves nothing but death and carnage in their wake. Some engines bear adamantine-toothed buzz-blades that are capable of cleaving through plated tank armour, while others mangle flesh and pulverise bone with lashing swings of their multi-headed flails.