Do you mean to make the map into a playable level? If so, then that's what I'm doing for my challenge entry: https://cartographersguild.com/showthread.php?t=35001

I can explain my workflow for getting the walls extruded from the 2d map if you like?

Also, I moved your thread to the new level design subforum Thanks for giving me a thread to make it not empty I may need to do some moving around of things from the 3d modeling sub forum.