Be Like Marty

Be Like Marty is an achievement in Halo 3: ODST. It is awarded for finishing an entire round on Firefight without killing an enemy. It is worth 10 Gamerpoints. Its picture is of the Campaign for Nuclear Disarmament's Logo, an organisation associated with peace.

This achievement can be obtained simply by using two controllers and leaving one ODST in a spawn zone, while you do the work on another controller.

Trivia

 * The name of the achievement is a reference to Martin "Marty" O'Donnell, the musical composer for the original Halo trilogy and Halo 3: ODST. This achievement was confirmed in a comment in the 7/7/09 Bungie Podcast, presumably along with the rest of the leaked list.