Bulltrue

Bulltrue is a Halo 3 Multiplayer medal that is awarded when a player kills another player who is in the act of an Energy Sword lunge. The lunge does not have to be directed at you, you can get a Bulltrue when someone is lunging at another player. It is represented by a brown diamond with a bull on it. In the Halo 3 Beta, it was simply a red star, because the Energy Sword wasn't "supposed" to be found in the Beta's Custom Games. It is easiest achieved with dual Maulers or a Shotgun. It is a very challenging achievement to get.

The name originated during play testing of Halo 3, where a frequent response to a player shouting the 'B.S.' word at his death was 'No, bulltrue'.