The medal as it appears on Bnet.

Wrecking Crew is a spree medal in Halo: Reach multiplayer, campaign and Firefight. It is awarded for killing fifteen enemies with the Gravity Hammer without dying. It was revealed post-beta along with several new and updated medals in the 05/28/10 Bungie Weekly update.

It is represented by a silver six-pointed star with a Gravity Hammer on a purple background in the center.

Trivia

• The name of the medal is a reference to the 1985 NES game, which involved Mario using a large hammer to tear down buildings.