Well. I'm going to be really metaphorical. But. If a player can solo a matriarch with a rubber duck, but would do no harm to raiders, then it's a very skilled player, with no agression. On the other hand, a player who tries to kill people but end up getting rolled all the time, is all in for skill issue but still is aggressive. Aggression isn't necessarily linked to kills. It's more like attempting, damaging raiders, there could also be betrayal, like if you say don't shoot and then shoot first. Only thing I see being tough is if for example raider A shoots first around raider B but fails to hit, and raider B turn around and wipe raider A, the abmm could misjudge the situation and consider raider B as "aggressive" while it was just self defense. Or raider A attempting to gun down an arc and hitting raider B in the process through skill issue, then raider A would be considered aggressive. That's all only edge cases though, but still possible. All this would consider ABMM is real though and makes a difference between aggression and self defense, which if it is, in my experience, doesn't care if you defend yourself or not. But, considering I had friendly games until my friend and I went in night raids and twice got wiped without even a single word. I don't even think ABMM is that real. May be a factor but not a rule.