Hello,
My name is Diogo and I'm a 3D artist.
I develop characters, accessories and scenarios, both for 3D printing and for video games and/or animations.
From what I understand from what they ask and from the video, they want to make one (or more maps), based on a 2D map. It looks like a very interesting project and I will be happy to help you.
I have experience in Blender, but currently I'm more comfortable working in Zbrush and Maya, and what you're asking is similar to what I've done with another client, but for tablet games, to be printed in 3D.
Hope to talk to you soon, stay well.