LowPoly/Flat Unity terrain shader?

Hey, i am working on a runtime terrain editor and i want to achieve the look that astroneer has (http://astroneer.space/)

so as far as i can tell from testing, the look is impossible to reproduce with “just” changing some terrain setting values. and since it should be editable during runtime, i also can not export it as obj and “flat” it by changing the import settings or using something like “poly world”.

so is there any other solution?

No smoothing groups because each face uses it’s own normal. I doubt that it can be done with Unity’s terrain system, but it’S no problem if you create your own mesh from script.