Yeah I really can't explain it although something hints towards something with the viewport render as it seems to work on Ray GL full, but not in the default view
CTRL+L switches between using Scene Lights and the Default Lighting. Err... read 'turn the lights' as 'turn off the lights' instead of 'move the lights'.
the textures are done in Substance Designer, and plugged into the default Marmoset material slots. (PBR roughness/metallic + height and tessellation) the bottom graph is from Substance Designer
Alt-x only sets the selected mesh to See-Through mode, which is untextured gray and semi-transparent. Oh, and the default hotkeys for Forward and Back are < and >.
Forgot to mention everything is modeled and textures by us, except the water. The fire was made using UT3 default packs, but we made the emitter from scratch.