Important: These tools were only tested on version 2.82.7 of Blender. If you are having problems in later versions download Blender 2.82
Make sure to unzip the contents of ShadowManEX01.kpf, ShadowManEX02.kpf, ShadowManEX03.kpf, ShadowManEX04.kpf from your Steam, GOG, or Epic Store "Shadow Man Remastered" folder before continuing.
Open Blender and navigate to Edit > Preferences
Click on the Add-ons tab.
Click the Install... button and select the ShadowManEXBlenderTools_2.1.3.zip file you downloaded.
If you don't see the Add-on afterwards type in the search field "shadow" to quickly find the add-on Import-Export: Shadow Man EX Tools.
Enable the add-on by clicking the checkbox and expand the field to see that there are 2 folder paths you must set before using this add-on.
Assign the Shadow Man Folder field to where the thoth_x64.exe is located. The Resource Folder field should be assigned to the folder where you unzipped the contents of all 5 of the ShadowManEX.kpf files.
Click the Reload All Defs button to load the def files that come with this addon. Once the files are loaded there will be a checkmark beside the button indicating that they were loaded successfully. If you edit any def files you can click this button to reload them. This button is also available in the 3DView Tool Panels Misc Tab.