The various soldiers of the Imperium might seem like well-trained elites, but the Assassins are a step above. And a new one will soon be hitting tabletops in The Horus Heresy. Check out the Clade Venenum Assassin in this preview.
From the article:
Using information as a weapon is fun, but sometimes you need to go a bit more old school. The Clade Venenum Assassin is an expert with poisons, toxins, and venoms – an arsenal of nasty chemicals strong enough to take down even the toughest prey.
It is said that the Assassins of the Clade Venenum had the highest success rate among the Terran Temples during the Age of Darkness.* Their Assassins were selected from the finest alchemists who could create exotic concoctions that could cause death without leaving any metabolic trace.