Don't mess with Lineage 2 players, man. Those guys are cold.
An otherwise harmless Lineage 2 clan grudge turned deadly serious last year when a Russian man died from injuries sustained during a real life fight with a player from the opposing guild. Furthermore, the offending clan continued to harass the dead man's family after his death.
Lineage II turned deadly in Russia late last year, where two members of warring clans meeting face-to-face in the city of Ufa resulted in violence and death. A 33 year-old member of the Platanium clan named Albert agreed to me a 22 year-old from the rival Coo-clocks Clan (*sigh*) in persona following a nasty PVP session that left the former dead. During the meeting Albert was brutally beaten, later dying from his injuries on the way to the hospital. Upon his arrest, the young man expressed no remorse - simply explaining calmly why Albert had to die. The alleged killer has now been charged with murder.