I usually share the concept art behind renders like these. But for this one, there's quite a bit. I spent a long time (with the aid of @robert_raccoon) to find a design I liked. Here are some of the earlier designs
Combine Soldier cross-section
A slave spacesuit, circa late 2060s.
There, I did it. #SixFanarts
Cross section of an Endrish spacecraft
Endrish engraving depicting a natural philosopher being visited by an other-worldly being.
Sketches of Paradijspromenade, which is now a space gun instead of a space elevator (because of course the Endrish would build a space gun instead of a space elevator).
doodles of a pathetically miserable leggy
My experience with machine-guns in BF1 vs BFV