Guard Mechanics

[Kyden]

Hello, I recently started fighting guards in one of the evil cities. For the first few pulls i was able to run past some green guards, pull a blue guard through the green ones, and root/nuke it down. After about 3-4 kills i was getting agro from the green guards.

At the beginning i was conned threateningly and still am. I am wondering why the green guards are now attacking as I don't think they should be unless I am misunderstanding the mechanics.

Also some other strange things. standing further away did not agro these guards but if i sat down they would come at me. Sometimes standing equidistant only one would agro and the other would stay put.

Trying to figure out this camp, can anyone help me out on what is going on? Could it be because I was below 50% hp? or dropped below some limit in faction?