This is nice. Incidentally, are all of your maps a development of the same theme? If so your perfection of the theme shows. This is markedly better than your last map even, and I imagine you'll trump this with Duel8.
The texturing is a mix of your last one and Douze. You've got everything much more solidly put together this time, and I thought you did well last time. The rocks actually look otherwordly rather than slightly bumped walls like you see everywhere else. The atmosphere is perfect: At no point did I feel like I was in an arena, rather than a closed-off part of a world, floating through space.
There's a hole in your deathclip so it will take longer for someone to fall and die. Also just to be safe I would have put clip around the boundaries of the deathclip, but the risk is practically nothing. I don't imagine there will be a situation where the hole in your clipping will ever become a problem.
Also, you've got some parts sticking out on the rock-wall where the death is. That's only aesthetics but it's obvious.
My concern with this map is its size. Is it actually going to be playable beyond 1v1 matches? Are strategic possibilities limited due to its size?
I wish you'd make a ctf map. That's the game type I play most often and I'd like to see a map of this calibre/theme in ctf.
I'd say 4/5. You've done almost everything perfectly, but the gameplay might be limited on this.
