@rcsinger: This game is probably not a best case for explanation, but here is general approach. When you combine a few meshes by tagging them in umodel, for example hands/body/foot of the same character which uses the same skeleton, and then apply an animation to it, upon export to gltf animation will be added only to active mesh (selected red in the viewer, if tagging is used). For blender, you can simply import all 3 meshes at once, then select all of them, choose the part with applied animation as active one and then merge them (Ctrl+J). After that you can delete all armatures from other parts, since they're not animated anyway. The result mesh should look the same as in umodel while being animated.
Sounds like a straight forward workflow. Can you explain to me what "tagging them in umodel" means and how to combine the meshes? Every time I try I can only load one mesh at a time. I try to -append- open but it doesnt work. I try to use the flat view and select multiple files but only the first mesh loads.
I had no issues at all with the Friday the 13th models when that game came out but I have had many issues with the Quarry and Halloween.