I was hoping to make this area, which is meant to be resemblant to the Chernobyl Reactor 4 (Without Sheild) as it is the Galdos Chamber after it blew up. I already finished adding in all of the props in the Glados Chamber from portal 2, I just need to figure out how to...
Make the area look more destroyed on the surface
Make the Walls of that particular warehouse look blown out (One plan I have is to convert the walls into displacements and then add in props, but that sounds incredibly messy)
Make the surface covered in debris, parts of Glados all over the parking lot
But one issue I have is that once I playtest the map, no future changes will take effect. So, does anyone know how to fix that?