Dreamlight’s Hot HDRI Sets Fallen Alley is rendered with G9 DT Mika. This works entirely differently from the Dreamlight's Industrial Backgrounds set (which uses a series of concentric circles with fog and background (on the outermost) MATs). This one uses an HDRI in the Environment Map input adding a different a new learning curve. I tried, without success, to get better shadows (more along the lines in the promo image) using an extra three-point lighting rig and a lot of slider manipulation (including the Environment Intensity). I also changed, more successfully, the Dome Mode to Finite Sphere and aggressively adjusted the Dome Radius and Dome Scale Multiplier to better match the character and scene scales. All-in-all, while the results are impressive if trial and error, these ‘Sets’ add an additional level of difficulty and complication to a render.