Once when i just started playing la2, I was checked by bothunting GM in very interesting way: he made in front of me some visual effects, smth like meteorite blew up, nothing changes to the environment my character or monsters, only visuals. But I was shook so much, never saw smth like that in game before, that I stopped killing mobs and just stared at that sh1t. So the idea was, if I would be botting, I will go farm mobs as usual, without reacting.