This one includes some more elaborate mashes, some of them you may recognize

Environmental maps, reflective objects and some glass.
More sound and and a bit of work on the Light Region.
Animations, not sure how it will work with a multi player environment but it works good in a single player environment.
Prp files, I dicided to put the cavern in a prp. file to shorten the export time.
More sprites and lights, and a few other odds and ends
Check it out, tell me how im doing. Its 17.28 mb's so its a bit larger
http://www.mediafire.com/?5jhqb86q7e2xy0c