i said it in game, but i'll leave the notes here too.
needs serious optimization. ran slower than pretty much any custom map i've experienced. make the trees billboards, cut down on the decorations, make sure the models have LOD fade distances, all that good stuff.
gameplay was a blast. the invisible walls around the spawns need markers. i wouldnt change the layout of the main gameplay area itself, it worked pretty well.
have you considered making it an arena map? it might lend itself toward that. people would die fast, but thats kinda the point of arena. =]