By the Emperor, it has been a long work.
You can download VI2 on the link below.
1: Go to your steam folder: \Steam\steamapps\common\Battlefleet Gothic The Cadian Gate\BattlefleetGothic2\Content
Make a backup save of Localisation and Data folders.
2: Unzip the archive into your BFGA2 folder, like Steam\steamapps\common\Battlefleet Gothic The Cadian Gate or however you installed it.
3: Move BattlefleetGothic2-WindowsNoEditor.pak (a large file) from Steam\steamapps\common\Battlefleet Gothic The Cadian Gate\BattlefleetGothic2\Content\Paks
to an empty folder included in the mod: Steam\steamapps\common\Battlefleet Gothic The Cadian Gate\BattlefleetGothic2\Content\Paks\Stock
4: Go to steam, set BFGA2 launch options:-NoEAC
Hex/Pak editing: PistonMiner
CSV/JSON editing: Imperator/DeusImperator
Additional ship information and help: Dire_Venom and Skalgrim
Special thanks to Iluv who fixed a mod-only related bug in the official Chaos Battleship hulls, making Chaos carriers beside the Despoiler possible.
VI2 has some plans for Xenos, with Dire_Venom and Skalgrim's help! Caliger is also planning to make sure the campaign is fun to play with the mod. If you can't wait but find it too hard, save game editor is a friend!
Dominatus Addon: A lore addon by myself. Less balanced but has larger fleets, more powerful Astartes and a redesigned Mechanicus. Unleash the Wrath of the Machine God!
Known bugs: Chaos campaign does not get the new ships.