The pervasive influence of the Dark Mechanicum is now spreading to Legiones Astartes. For the first time, the Dark Mechanicum will be a playable faction in its own right. In this review, we’ll take a look at the new Stalker Constructs and the Serperos ‘Overlord’ Heavy Stalkers, and compare them to other Legiones Astartes kits to see how they measure up.