I had the pleasure of owning a portion of the Fire and Ice mission to acquire the Praxic Blade. I built out the initial combat/puzzle arena, taking it from early massout all the way to completion. I assisted in setting things up and planning for the cinematic moment where the world inverts as well. Andrew Hopps ran point for activity design and was a critical part of designing the experience and puzzle. Lighting credit goes to Mike Poe. Finally, as always, credit also goes to the various departments that had a hand in this including, vfx, audio, narrative, cinematics, and more, as well as the many palette artists over the years that built up the library of assets to pull from when assembling the map.
Marc Thompson was responsible for the entire initial traversal experience leading up to this arena and Ian Davis was responsible for the final boss arena that comes after this.
https://www.artstation.com/mjcr24
https://www.artstation.com/marcthompson
https://www.artstation.com/iandavis