Headshot Honcho is a Halo 3 achievement that is obtained by scoring ten headshot kills with a Sniper rifle or a Beam Rifle in a ranked free-for-all matchmaking playlist or in Campaign. It may be done on any difficulty in Campaign. The Achievement is worth 5 gamerpoints and is represented by black crosshairs with a sad face in the middle. This achievement is only obtainable through 10 headshots on Brutes or Jackals. Grunts do not count.
On Sierra 117, a Sniper Rifle can be obtained at the crashed Pelican. It can later be used at the last part of the level, where there are more than enough enemies.
- Headshot Honcho is related to the phrase "Head Honcho", which means the boss, John, number one, etc.