My process when it came to this process was simple, my goal was to aim for the doom, the dark ages tecture style. So I looked up references of their civilians on ArtStation. And tried to simulate their style and look with dirty clothes and lots of grunge. I had to revamp all of the textures because previously, the model had stylized textures instead of realistic ones. So I had to revamp the face, eyes, bust, hair, and fur to fit Doom's style. I didn't face any extreme difficulties this time while modeling; it was a smooth process throughout the time modeling.
https://www.artstation.com/artwork/0l9zzG
https://www.artstation.com/artwork/r9ANJ2?album_id=2117248