A good strategy On any map is to get bouncing betties first. Then camp in a corner with every door/ window facing you. You have to have good guns for this to work. Then place your bettys close to you, in a circuler area so in a couple of ronds you are surrounded by betties. U can hold off zombies easy with a raygun. If you get bored go move your minefield.
I may not be the best at it since i do it on my ipod but i usually get to wave 20-29