Hi Elliott, This is a great breakdown and very generous in sharing your process and insights, you came a long way from the vending machine days!
Are you planning on releasing the UE4 project to the public? Or only builds? I'd love to play around with it in the editor if possible!
A little is known about Kojima’s Death Stranding. The project is so mysterious that even the team behind the game has a hard time figuring out its core. One thing is clear though — the game will feature a beautiful fog. In a presentation at the Siggraph 2017 conference, Kohei Ishiyama from Kojima Productions and Guerrilla Games’ Giliam de Carpentier talked about the power of the Decima Engine.
The developers state that the team had created a new fog system in the Decima Engine that allows for more artistic flexibility over the appearance of atmosphere in-game. Guerrilla Games and Kojima Productions combined the precomputed atmospheric scattering model and an “analytic height fog” model to mix both photorealism and artistic flexibility in a singe model.
The talk, for example, also breaks down the aspects of spherical area lighting: