True. I believe you need to win at most 5 battles to progress.That moral decission holds no ground. You can not go past the tutorial without fighting, so if fighting is a problem that is the moment to stop.
After that, you can burn your barracks.
I'm a complete pacifist in one of my worlds. Not for moral reasons, just to try an alternative playing strategy.
I found it odd to have no option other than fighting to finish Halloween. Odd, just because that hasn't been true for other recent events.
I compromised. Fight...knock off a couple units....Surrender. Repeat until done.
My battles won count is still at 5. So I can still call myself a pacifist, right???