New unit types for all factions enter the fray with the Specialist Pack . Each of the new units brings something new to their faction: support abilities, superior firepower, devastating psyker powers, and more. Astra Militarum - Ratlings Sniper infantry unit that can move after shooting . Though less resilient than their human comrades, Ratlings are naturally excellent shots. It is said that Ratling marksmen can take the head off a heretic from over a kilometre away. Coupled with their knack for staying out of harms way, this makes Ratlings formidable snipers who can take a surprising toll upon superior enemy forces. Chaos Space Marines - Dark Disciples Infantry unit that increases the defenses of Chaos units. Dark Disciples carry profane accoutrements of their mastersworship and parrot the fell words spoken in his baleful prayers. Many such disciples have been augmented to better serve in their roletheir skin stretched out and inked with grim litanies, or their mouths fitted with