So, I was asked to model a new chest for the Elder Scroll III: Morrowind recently. The challenge was that it had to be super low-poly, no extra maps, no PBR, and no decent in-game lighting.
I made the model in Wings3D and then UV mapped it. I then used Substance Painter to add the texture maps as usual, but this time I couldn't use PBR! A challenge, yes, impossible? No.
Exporting the textures as a flat 2D single texture with the lighting effects removed game me quite a decent result, see for yourself;