first of all, interesting map :D!
i actually dislike the lightning, cause its a bit 2 bright, at my taste :P. maybe u should take a bit softer lightning (even light 0 250 175 100 already helps a bit to look more natural). the ambient is still default to maybe u should try 2 create a natural atmostsphere with it to.
the detailing, very nice :D!
gameplay, a bit strange, never seen a deathmatch map thats uses the same principes of a ctf map =s.

i say 4/5 for now, actualy 3,5 but cant give srry =s. nice map!