A 4 weeks environment created in Unreal Engine 4, Blender, and Substance Painter.
Originally started out in Unity, I made the move to Unreal after difficulty with new Unity HD Render Pipeline shaders. You can find some of the early screenshots in my blog posts.
This environment started out as inspiration from The Division 2's Washington tunnel system. I played a lot the Division 2 when it came out, and still do. Every time I have to walk through the sewer system, it always gave me a spook. I love the atmosphere and the claustrophobia of the environment.