Wall upgrades

[The Dark Sun]

So far you can upgrade almost all things, except walls and ballistas. The Ballistas aren't that big a deal to demount and rebuild, but the walls are though. A way to be able to upgrade walls would be awesome for those wo've build huge bases with second or third tier walls.

[Hatsune_Neko]

game doesn't have ballistas.
and you can upgrade walls. tier 1 walls can be upgraded to tier 2
tier three you need to either scrap the current walls or build outside or inside the first ring of walls, then you can upgrade from tier 3 to tier 4 to tier 5

don't know what game you're talking about but it sure isn't Kenshi.