I think you might be overusing point_spotlight a little too much, it
looks rather bad in the first screen on those light fixtures. The
indoor lighting also seems too muddled to me without any clear focus.
I'm not too sure what to really look at and there's just too many
colors going on. Architecture looks okay though, and I like the
outdoors area.

WOW i didnt even know such Lovely natural textures could be used in hl2 propperly! nice job! I love natural maps & am going to start my own project soon = D Maybe if u got any hints u could lend meh for hl2 mapping ? pm me! Gameplay is 2nd prior here or so it seems...!
2nd pic especially

Best use of the fog effect in any HL2 map in existence!

But how's the gameplay? Does the arena provide any cover? Like rocks? Trees don't block bullets effectively as far as I know.

Simply sexy looking!

Looks nice.

Wow, I love how it's got that swamp(ish?) feel to it.

Great...good work...there's a lot of atmosphere!!!

Slimey little place u got there

looks more like a scene from an rpg than hl hehe

Is it listed as "self-illuminating" in the materials browser, or as any other type for that matter?

Its a normal texture- metal/citadel_metalwall077a