I tried it yesterday, great map! I really like the flow, there are some nice well thought paths. Some places have amazing details like the electricity generator and the working site lamp but overall the map is pretty grey. I'm guessing you'll add plenty more things since it's a work in progress. Also maybe make the water around the map kill the player if he falls in it. Right now if you fall in the water there's no way out.
Good luck finishing the map!