This allows you to gain access to all cosmetics, including the unobtainable ones!
Client-side only!
Utilla 1.6.14
In DnSpy you can find out where the cosmetics are handled.
So in GorillaNetworking.CosmeticsController.GetUserCosmeticsAllowed() you can apply a patch that gives you all cosmetics.
First you will need to install an .NET Core SDK or framework
Then you download the project and change in the Directory.Build.props
the Game path.
Then you run the dotnet build
command and the DLL file is in bin/Debug/netstandard2/Cosmetx.dll
If you get an error, you will need to run dotnet restore
first.