It is a lot more effort than some people think to make a custom story. I like to add details and if I don't then it feels like I haven't completed the map. I also continuously have to fix stuff that doesn't work the first time and that can take time. Scripting is also hard. I think the sewers have been the hardest maps that I have done with scripting. It is a good thing that I am almost done with them.
Finishing the Sewers