This is an updated version of the Warhammer 40K multi-set ruleset (Dark Hersey V1, Rogue Trader, Deathwatch, Black Crusade, Only War, or Dark Heresy V2) that was originally published on the forums by Paul Pratt.  The ruleset has been updated to work with the latest core features and standardization as of June 2024.  Please see the forum thread for more details.