UV0 I mapped to the tileable painted metal texture. UV1 I baked all of the assets in painter to provide an RGB mask for wear, dirt and subtle grime. In the levels I then used decals to blend these assets nicely and have unique treatment so where an asset broken down here may look more towards the "simpler" end it all gets unique texture information once composed in the level. Decals were incredibly cheap for us so I made sure to scattered them where it made sense to add wear and history to the space.
A large majority of the exterior assets I mapped to textures created by Ben Armstrong, Dave Miragliotta and Connor McCampbell. A few textures by myself and others from the large selection of textures from our asset library. Merritt Fillban made the animated molten steel shader and then Tyler Robinson rigged and animated it.
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Concept:
https://www.artstation.com/lsuzumoto
Environment Art Leads:
https://www.artstation.com/kxiro79
https://www.artstation.com/billymatjiunis
Art Directors:
https://www.artstation.com/pombero
& Chris Sutton