They're not zombies. I said they act something akin to zombies in the sense that all they do is eat living animals and people.
Okay. That's worse. They are intelligent and capable of tactics. Therefore, the entire attacking force is combat capable.
Here:
Attackers:
Evil horde (50): 8
Evil leader (1): 10
- leadership multiplier x2
Defender:
Town sheriff (1): 5
- leadership multiplier x2
Healthy men (100): 2
Children (100): 0
Old people (50): 1
Women (100): 1
I don't care about woke feelings. This is biology.
Now you also have defenses these are a x2 multiplier, but only while behind the defenses. Once the enemy gets inside, this goes away.
The old and the women will be held back to watch the children, so thus is two stage.
Attacker to start: 810
Defender to start 810.
In this situation, both sides get wiped out, but the women, children, and old people live.
If the defenses are breached, it becomes 810 vrs 405. Assuming perfect attrition we have 405 vr 150 in the second battle when they get inside and go for everyone else.
Yes, you could put the old and women on the front line, but the deaths will be random, so in that case, it will be
810 vrs 1410, but assuming random deaths, and leaders die last, you will have about 27 dead men, 15 dead old people and 57 dead women. Sorry, but I don't know a village that would risk that sort of loss.
And if the defenses are breached, we have 810 vrs 705. Without defenses, even if everyone fights, the defenders lose
That's assuming effective parity. Increase the number of Attackers by any significant amount, any way you look at it, the Town is getting wiped out when you kill off the primary defenders, if any significant amount of the attackers survive.
The defenders will be weaker, have no organization and no defenses once the town's primary fighters are dead.
70% is a number you are just making up, or this town is full of vikings.
...
So. In order for 30% to survive, assuming the children are the last to die, you would have to have the horde attack, and exactly 8.43 evil horde and the leader get through to attack the women, children, and old. This would leave 100 children, 2 old and 3 women.
...
Now, your specific village and evil horde is different, but the formula remains the same. Play with the numbers all you want, but there is clearly a point where the village lives or dies, with anything between 30% to TPK is basically the whim of the author.
If your goal is realistic, then be realistic. If your goal is to tell a story and it just happens to be 70% survive, then 70% survive. It it possible? Sure.
Is that specific outcome likely, no. But hey, people roll natiral 20s all the time. No specific outcome is likely. You create the scenario. You choose the outcome.
There is a difference between unlikely and contrived. 70% is unlikely, but not contrived.
The MC Showing up in the nick of time is unlikely, but not contrived.
It isn't how unlikely something is, but how often you do something unlikely that eventually becomes contrived.
...
Remember: if Hitler had not gotten dental work done the night before D-day, he would gave been awake to order in the counter attack and the additional tanks would gave likely defeated the allies. As such, the allies basically got 12 hours grace because nobody was brave enough to wake up the furer.
A dentist who prescribed Hitler extra strong sedatives changed the course of human history.