You can easily downpatch to build version 1.006 of the Crowsworn Boss Demo by following the guide below.

The necessary links are listed: https://dotnet.microsoft.com/en-us/download https://github.com/SteamRE/DepotDownloader/releases/tag/DepotDownloader_2.4.6

Necessary commands are listed: dotnet DepotDownloader.dll -app 2064050 -depot 2064051 -manifest 3736004589675955504 -username u -password p