IIRC, and I don't know if it's the same with this alpha version, but I remember messing around in a level editor for the original Duke Nukem 3D, and mirrors wer

IIRC, and I don't know if it's the same with this alpha version, but I remember messing around in a level editor for the original Duke Nukem 3D, and mirrors were done simply by having an adjacent room with mirrored geometry :) (and, I assume marking the wall between as a mirror so it knows to also render the dynamic objects mirrored--but I don't know for sure, I was quite young and didn't have a lot of success with this level editor because I didn't understand it fully)