This is my favorite battle in all of this map.
The first thing you need to do is run all the way to the back of the room and kill the boss.
While running to the boss try to avoid the press plates in the middle of the room. (skeleton)
Kill the boss quickly because there are alot of zombies that will start filling up the room!
and they will set off the pressure plates if you havent already... :)
If you do this right and fast the boss fight will come at you in waves making it really easy.
If you wait ur dead. There are alot of mobs in there!