Is this still possible to do? I tried it several times about 1-2 months ago and I couldn’t get it. The enemy didn’t surrender when I expected. Even well after 10 minutes I’m still destroying their city to make them surrender. I’ve beat nearly all the DLCs for this game so I’m surprised I can’t get this achievement.
Did you attack their base in the north-west?
Yes, I attack north-east and north-west then around the 9 minute mark I’m raiding the central base. Last time I think I destroyed the town centre, but it didn’t trigger the victory. I’m scratching my bald head, wondering what the condition is.
You don’t need to kill the north-east one. They surrender if the central and north-western base fall. So you can focus your attention on just them.
I tried it a couple of days ago. I destroyed the north-western base then attacked centre. I have to destroy every building (almost) for the enemy to surrender. What units (and upgrades) should I be using?
Next try I will focus more on centre.
Make sure to get every free unit first. Then just prioritise more of the units you started with, and their upgrades. Mostly attack and armour.
I went for pierce armour upgrade and the infantry attack bonus. I retrieved the units in the north east and I think I can destroy the western base slowly, while focussing more on the main one. Mostly I trained Swordsmen.