Teaming up with the local Chaos cultists in Andeonium Hive, the self-proclaimed Omega Soldiers, an Alpha Legion force was tasked with the ambush of a reinforcing Blood Angel detachment from the East. The elite Blood Angel Terminators met stiff resistance from the Alpha Legion Commander Agamemnon, who defeated the Librarian in combat, before he was in turn defeated by a Dreadnought. The Blood Angel Chaplain led the Death Company on a rampage through the Chaos flank, and slaughtered their way through two Cultist units as well as the Raptors. Flamers of Tzeentch, summoned by the Cultists, seemed impervious to plasma, as they where bathed in the plasma cannon of the Dreadnought, but remained unharmed. At the end of the day, the Blood Angels were halted, but at the cost of the entire Alpha Legion force.
Meanwhile, two Death Cult Assassins tried to launch a pair of missiles into the Andeonium Hive. Their efforts were thwarted by Inquisitor Seraph, who suspected an attempt to launch or destroy the missiles and had thus stationed himself and his followers Mad Dog McGree and Argyle the Arco-flagellant. Simultaneously, an Aeldari Ranger and an Aeldari Pirate Princess arrived with a mission to destroy the missiles, who were targeting a hidden Webway gate unaware to the imperials. As the assassins neared the missile site, they came under fire from the Aeldari sniper, and had their priestly escort and his cyber mastiff sliced to pieces by the pirate. Enraged, one of the assassins charged the sniper, but was shot and killed before she could reach her target. The other assassin engaged in combat with the Arco-flagellant, but was crushed to a pulp after failing to dodge his decapitator. The victorious flagellant and the awakened Inquisitor then tried to dispatch the Aeldari, but failed as a malfunctioning melta bomb was placed on one of the missiles and blew the entire emplacement to pieces.