Heh, it's almost like LEAK!
Ok, I've just finished your map. I forgot most of its previous version so it was almost like something new.
The gameplay and detailing was great. I don't know how the buttons were placed before in the barrel-puzzle area but I've menaged to find them much quicker now than before and without pointless wandering. So this area is rather quite ok, however I expected one or two buttons at most.
I had more difficulties with these 4 numbered buttons. For a few minutes I couldn't find the button in the toilet cabin but probably it's my fault. Somehow I didn't expect the button to be there and so I missed it. The area in the vent where you get to the pool with 4th button is also not easy to notice. Also many buttons in your map can be only activated when shot, I don't like it, but it's more like a personal preference than a complain.
Other than that the map is absolutely amazing. Maybe it could use some more interesting skybox but it's really great
