One shot, one kill. That’s what the Exodus Assassin’s motto is. Get a look at this Alpha Legion mini in this new preview for The Horus Heresy from Games Workshop.
From the article:
The Alpha Legion attained a total mastery of subterfuge during the Horus Heresy, largely because almost every opponent of worth they were tasked with destabilising was another Space Marine.
Sometimes, however, clever disguises and unseen infiltration aren’t a match for power armour, and a really big gun designed for the express purpose of annihilating Astartes is what you need. Enter Exodus, the Assassin.