Kingdom Come: Deliverance

In general, there is a way. Stun a robber or Cuman for and take out your bow and aim straight at the head, after a couple of seconds it will say dead. Before this action, go to the statistics and see how much it was, after this action, also look and if the number is higher, then you are doing everything correctly.

Considering the imperfect aiming system, I found my own (perhaps a little cheating) way.
We find a camp of robbers or Polovtsy (easily found by the characteristic “hazes” on the map). We get there around 10-11 pm in order to carry out reconnaissance not in pitch darkness. We wait until midnight or a little later, here you have the advantage of stealth, a “sneaking chameleon” and others like it.
Most likely, by this time there will be only one sentinel left in the camp. If there is a dog, we get closer, aggro it towards ourselves, take it into the darkness, there we pin it with a melee weapon. After this, we study the patrolman’s route of movement, approach him and gently strangle him from behind. We don’t kill, otherwise the others, when they wake up, will become agitated; we don’t need that. After stunning, we approach the fire with the snack and throw poison into the snack. It is poison, and not poison, from poison that enemies can die completely.
We retreat into the darkness beyond the patrol route (he will come to his senses), wait until 8 am by rewinding time. At about eight, the camp will begin to gather to eat. Having drunk poison, the poisoned will crawl onto their mats in order to improve their health with the help of healing sleep.
So at about 9 am we get together (it’s better to save ourselves with schnapps, of course, because it may not work out or there’s a glitch) and go to reap the harvest.
We don’t make any noise, we approach each one in turn, strangle the one lying down, take off his helmet and everything under the helmet - and you can aim as much as you like.

Most often, after 3-4 game days in a cleared camp, enemies will spawn again, but this does not always happen; I was not able to track the pattern.
I would also like to draw your attention to the fact that if you complete this achievement along with the achievement for the number of enemies killed, then you should not take the easy path and take out camps on the quests of Bernard, Borek and someone else. As soon as you take out the quest camps, the area will immediately become “cleaner”, you will no longer come across peasants who want to kick you with a stick - that is, the easiest way to stuff corpses in Bohemia.
At least, that’s how it happened for me - after the camps were cleared, random events on the roads stopped happening altogether.