This map kinda sucks. But here's my partial playthrough of it. I don't believe there's any real way out, unless you count going to the secret room and seeing the message "You Win!", which doesn't really seem to be sufficient as a way of winning. I'm going to call "winning" in this map "defeating all the turrets", but that could prove hard. The last 7 turrets or so are protected by their numbers and portal proof walls. But I'm pretty sure I need to utilize the cubes from the secret room.

http://www.youtube.com/watch?v=bQLaCGhUAE4&feature=youtu.be