After 9 months the KT-21 compatible version of the Age of Darkness mod is available at https://ossifiedsite.wordpress.com Initially this is Astartes only but future updates will cover all factions in 30K
156 page Pdf, 29 mb. Reworked from the ground up to be compatible with the new edition of Kill Team.
16 pages of lore covering the end of the Great Crusade to the aftermath of Isstvan V
8 pages of additional rules including Destructible Terrain, Suppress and Challenge actions, and the core 5