I worked with Weforge to create a few PBR photorealistic skins for their game Macabre. I initially approached this mesh work as super optimised but was quickly told that they were happy with a high-poly character skin with high detailed textures, so I pivoted to that. We used the traditional Base colour, ARM/ORM, and normal maps. The master material used the normal map to create snow as can be seen on the cover art.
Thanks to Jake Hempson for creating the masks on the cover art and the initial higher poly base (and concept) for this character skin - it looks sick!