Yeah the screenshots I posted look much brighter ingame than they do here. The lighting however is still a WIP, I've been placing lights as I go along but the tweaking will come near the end.
Trust me, I don't enjoy shooting people in pitch darkness any more than the next guy, I'll be testing it to make sure that there are SOME places to hide in and ambush people if you wanted to but for the most part I plan to make it just dark enough for it to be moody.
And yeah, I plan to use the fog for that purpose
PS: I like the tutorials in this website, they got me started with a few things I didn't bother to try and figure out for myself. I'm surprised nobody's posted any tutorials on texturing effectively so perhaps I may do one when I'm finished? IMHO texturing is very important for a good map.