Relighting was achieved by the use of cinematic cameras, sequencer and the render queue in Unreal Engine 4.
All post-process was done directly in the Engine with additional camera controls.
Reference is taken from The Evil Within and other various lighting styles. Here's a breakdown of this project. I'll discuss the Lighting and how this was achieved.
Final Render:
Reference:

Planning and Lighting:





As you can see there's a big difference in comparison to the original.
Final Renders:

Sergey Tyapkin:
https://www.artstation.com/tyapkin
Clinton Crumpler:
https://www.artstation.com/artwork/X02eY