An addon to the main modification "Improved Campaign mod [BETA] (December 30, 2023)" (this addon will not work without it!), which returns the Tartarus and Winter Assault campaigns.
The Tartarus and Winter Assault campaigns have also been updated - now it is an addon to the main mod (it follows that downloading and unpacking the main archive is mandatory, without this the campaigns simply will not start!), and not a separate modification, that is, almost the entire balance is used from the main version, exceptions to this rule are mostly due to the features of the campaigns themselves (for example, in the Chaos campaign in Winter Assault disabled the units of the other three Chaos gods, since the warband itself in this campaign is called the "Bloody Legion of Khorne", the Chaos Space Marines have been replaced by the Space Marines of Khorne; in the last mission of the IG campaign, it will be possible to hire some Space Marine units in HQ, and in the Martian Command Center - a Land Raider, which the player accompanied in the previous mission).
In general, the Tartarus and Winter Assault campaigns have been almost completely redesigned, the Cyrene Fall campaign has been disabled (but not cut) due to the abundance of all kinds of bugs in it (script errors, stuck plot units that the player cannot control, conflict of plot twists and some mod mechanics, etc.), whether it will be returned in the future is unknown, but I tried to fix the existing bugs and make it easier to pass, it turned out how it turned out.
There was simply no point in writing all the changes, download and try.
Wait for the download of the main version of the mod, then proceed to install this addon.
UPD. The main version of the modification is now also downloaded.