As far as playability goes, you navigate the middle section by sense of touch because of flat lighting and featureless textures (colour variation in the textures and visible features like torches or mushrooms or something are badly needed here), and as Tetzlaff mentioned the floor is completely uneven throughout the map which makes the simple act of walking around a trial and aiming on the move practically impossible.
Overall, not a very good map, by no means terrible but just not good. Only download it if you want a looksee because it does look quite nice in parts.
The swaying tree branches are a nice touch, but that´s about it. The terrain would have looked better (and maybe provieded smoother flow) if brush sculptored rocks would have been combined with a smooth terrain mesh.
It´s a typical LDA map: cool ideas and an interesting vision of the map, but poorely executed and no gameplay at all.