Hey, I tested your map a bit and these things did i come up with.
You are able to get on the edges of many roofs , you are able to get on the roof above point A (and i suppose that isn't what you want or you better decrease the inclination ) and there was allmost no smooth clipping inside the blue spawn.
furthermore I think its a little bit weird the boiling water is just abruptly changing into normal water. I personally think it should be better to keep those seperated.
Last but not least, the map looks really great! Keep it up :)