The book replaces previous index rules with a highly technical, deep rule set featuring 23 datasheets and five unique Detachments. 
It completely modernizes the sadistic, glass-cannon alien faction from the dark city of Commorragh for competitive and narrative play.
When a character is attached to a bodyguard unit, spending a single token activates the Pain abilities of both the leader and the unit simultaneously.
The Codex features five distinct Detachments that cater to different sub-factions and playstyles:
Realspace Raiders: A reimagined and subtly upgraded version of the classic combined-arms list.
Skysplinter Assault: Focused heavily on rapid mechanized movement and swift aerial strikes via grav-transports.
Spectacle of Spite: A dedicated close-quarters combat detachment emphasizing Witch Cult units.
Reaper's Wager: Built around an aggressive, high-risk "Callous Competition" mechanic that incorporates Harlequin allies.
Coven Detachment: A trick-heavy option built around Haemonculus Covens and flesh-crafted monstrosities.