As a forest hunter level doesnt matter, You invade infinatly up and down and ive havent gotten much in the way of hatemail while doing it
As for ganks they are pretty much the norm in the forest, very few people go it alone and even fewer fight with honor (Not that thats always a bad thing, it lets you be as creative as you want with them)
As for the last bit im not sure what you did but if the guys mum got involved i think it might be a bit far
Edit: Ok I may have just had the closest call ever, of all time
I got someone who wanted to duel (yes, in the forest, I know) I took about a third off his health and then he stunlocked me with velkas rapier, when I got away I could not see my heath bar at all, I thought he would hit me first but I charged him and started spamming the 2h R2 with my lifehunt scythe anyway, somehow I avoided his attack and ended up stunlockind him to death
You can Run....
You can Hide....
But know that you can never escape
Know that you are only delaying your end
Know that we will find you
Because of your choice
You chose to be a Ganker
Now you will pay the price
Because you cant Flip anymoreRaven of the Great Wolf