Ash Fortress Take 10

TL:DR - Hills are your friend, Arches are really nice, but back to basics, always bring your Hoe

After my friend and I have taken over 10 fortresses in the Ash lands, we have tried it all. Ballista, Catapults, Battering Ram. We got lucky when we put down our portal just outside a fortress for the night, to go home and wait for day light, such as it is in the Ashland, only to return and see the hill we were on we close enough to jump right onto the wall of the fortress. Easily the quickest fortress fights we had up to that point.
Then we found the fortress with a high Arch leading right to it. We took out the generators and the battle was over before we knew it.
The issue with Fortresses without wall damage is how to get back in, and these both made it so simple, but we have seen enough arches destroyed by Morgan and Lava bomb. So we went back to the basics.

Current recommended method.  Hoe, 10 wood and some stone. raise the earth so only you can jump up, then raise in steps as high and you want. Your first entrance becomes your only entrance and the quickest entrance that does not get destroyed so easily.