Down the dank dark halls of the cellar, an expanse of stone, barrels, and crates,
rats (the king of rodents) scurrying round floor stone an tile, to and fro from floor grates.
But as mentioned by one keen observer, “Gunpowder Barrels too close to flame”;
In reply the owner answered, “Lo! Twas supposed to be provisions and wine! Whose to blame?”
I have completed lighting and light emission of this dungeon. I found that I had to play around with the rendering a bit since the point light decided not to render in the Eevee. I also found I had to play with the shadows a bit, for suddenly everything became much slower than what I am used to. Even the Cycles rendered more quickly. So I hacked and slashed at the Eevee rendering options until rendering time picked up. Blender itself crashed a few times in the process. Oh well.
I think the issue was that I had the ambient occlusion much to high, so it was trying to do its eevee guess work at a much higher distance. Apparently 10 is not a good setting 
I chose the lights to be slightly warm and inviting, but the sun light to be green, so that there is a slight ominous tinge lingering just at the edge, depicting that it may not be as safe as it would seem. Perhaps it is a warning, like the one provided by @NP5 concerning those barrels.
Eevee Render:
Cycles Redner:
