Nice maps. Had fun playing them. Still some problems, but this is still a beta.
There are pipes, molotovs, pills, gas cans and propane tanks everywhere. It really makes it too easy to kill all the horde with pipes when you get new one when you walk few steps further. This really ruins the versus game experience when boomer wont do anything and tanks are easy to burn. Hundreds of pills wont make it better either.
Mayby that is a problem with the director, and it cant choose which ones to put there.
And some fps drops noticed in the first map, especially near the first house.