L2's pvp system wasn't my favorite. Basically you could hit someone then you went "purple" if they choose to attack you than you can kill each other like a regular duel. If you killed someone who was "white (neutral)" you went "red" that meant that you were fair game to any person you came across...which just ended up being hordes of people chasing you. It's been forever since I've played so I'm sure all thats wrong by now...either way this game does look interesting.