Imagine, a mechanic rewards movement and stealth, something that can make a hostile viable, Du Du Du! Backstap mechanic!
The idea would be that when you attack someone with a knife on his back, they will be killed instantly. This can add a full deep layer of motion depth. Hackers will not be able to penetrate it because it requires them to move properly. (Hackers can't do anything;)) Getting a hacker is a hacker.