noble heath
Stairs are really broken, when you place a window or fence or anything next to stairs you can jump through and onto the stairs but the zomboids cannot path through it, this makes it very easy to make impenetrable walls and defences that quite frankly shouldnt exist. This makes them work as an one way enterance that zombies cant get through very easily, and if you make a row of stairs you can make an impennetrable wall ( sorry if my writing is sloppy its late)