The whole idea of those enemies is that you've gotta deal with them fast, before they call more over. Once it snowballs, you're out of luck, for exactly the reasons outlined. I plan on revisiting a number of things in 1 once 2 is decently underway, but again, from what I remember from playtesting it's entirely possible to clear all of them out without losing by simply using a save to try a few times till you get a good "roll" and locking in each successful battle with a new save. This isn't ideal balance of course, and probably something I'll tweak, but definitely not impossible. The target, especially for the boar guards, is that it be possible, but annoying, thus tempting you toward the other option. But chances are both could be brought down a BIT, and I'll look into that eventually.