Thanks to Ghost of Tsushima for the inspiration!
Polycount: 400k tris
Software:
High Poly - 3ds max and ZBrush
Cloth - Marvelous Designer
Low Poly and UV - 3ds max
Bake - Marmoset
Texturing - Substance Painter
Render - Marmoset
You can find more here:
https://www.artstation.com/artwork/NGVqON