Aa, ok, I am sorry, now I can see the reply from the beginning. OK, now I know the trick:) Who would have told that this is only about a "construction barrier", hehe. How did you discover it, by accident?
Nope. I figured if when the AI comes and attacks me in my village and my buildings prevented all of them to be in combat with me at once, I can "take it out of the village" and save a lot of troops.
I haven't always used this technique, but why not use it? (Lives are precious!)
Because without it I really doubt to pass Lava Valley or On the way? Or is it possible??
Of course it's possible. If I got 0 losses, do you think I couldn't beat it without using building barriers?!
Here's the first 24 minutes without using building fences and without using single leaders (for everyone who doesn't like that).
(58 losses without trying too hard)
As long as you can drive the AI, there is no (reasonable) map which cannot be beaten with that much effort (if you are at veteran level like you claim to be). I define all SP maps in the remake (with the exception of Invasion/Zombie Apocalypse) as reasonable.
Because with this trick every mission seems to be 90% easier and it's like "legal cheating";)
That's the idea (I'd say it's 99.9% easier.
)