I've only messed with doom builder a few times and I wasn't very good at it, but I'd like to try again and get this idea out of my head:

As a brainlet beginner, how complicated would it be to design a single map wad defending a pillbox from a wave of enemies? I also can't decide if it would be better to halt an advancing column from one direction or have to defend 360 degrees. I'm just an autist who likes to shoot things from cover. Thanks.