Someone in a multiplayer game who always goes for the kill no matter what game mode. You usually see these types of people lost the game or forget about their teammates in favor for the highest kill of the game
Man did you see that guy he was being such a Kill Whore.
He didn't do the objective this round, what a kill whore.
Duel By Kill3r Rule: If anybody trash talks one of YOUR posts in the club then YOU have the right at your own discretion to call that person to a duel by Kill3r. This is a Duel that CANNOT be refused. Refusal from the trash talker will result in an instant ban from the club. Only trash talk if your willing to back it up.