As a player of Lineage 2 and many other PvP games and a supporter of open world PvP, I have an idea how to overcome the system of
cunning (tricky) killing of players. When you deal damage to 95% of a player's health and another player finishes him (last hit) and gets corruption.
It is necessary to make sure that everyone who inflicted damage on the player receives the same corruption as the player who finished (killed) the player. 
Edited: To bring clarity to the thread. If you decide PK players, then this is your choice and it's great, part of the game, interesting content - we love it
. But still, in AoC, as well like in L2, PK carries corruption (karma in L2) and, in my opinion, it should be given not only to the finishers (last hit which kills), but also to those who help him - through hitting PK's target.
So that the accomplices would also be punished - accomplices in murder.
It can be same corruption like a last hit-giver (finisher) or something, like, last hit-giver (finisher) gets 1k corruption , who helped him to kill gets 500 corruption and etc.
