Genestealer Cults have to work quietly from the shadows as they try and corrupt and overtake a civilization. As such, they have well-trained saboteurs who are well-versed in the knowledge of explosives. Able to destroy key locations under the cover of stealth, they progress the Cult's plans from the shadows. Get a look at them in this preview for the upcoming Shadow Throne box for 40k.
From the article:
We’ve already introduced the two stars of Warhammer 40,000: Shadow Throne, and have even taken a gander at their rules. This week, we’re revealing more about their lore. First up, we’re looking into the Genestealer Cults’ new reinforcement, the Reductus Saboteur.
The culmination of a cult’s accumulated knowledge of explosives, the Reductus Saboteur is nothing short of a genius when it comes to improvised bombs and incendiary devices. They have a compulsive drive to tinker, tweak, and perfect their art until they’re able to produce deadly chemical concoctions from even the most rudimentary components. To that end, they’re constantly on the lookout for suitable material, scouring toxic sumps and servitor graveyards* for discarded ingredients to scavenge.