too plain and ugly. i didn't test the gameplay. today's visual rate is so high that this map can't even hit the minimal limit. Work on colors and shading or even multi-texturing.
The looks could use some improvemt like some shading and maybe a bit more scenery, but the layout looks very promissing. Just plain simple original soldat fun. Although it looks kinda cramped, I would remove the middle stone for some extra space, but who am I. ;P
Man, I swear I have seen a lot of maps like this. Try something different next time =) (I'm not [at all] being offensive, it's just that there are a lot of maps like this, or am I wrong?)
Oh! And a little bit more of darker shading would make it look better.