Chief, Smash!

Chief, Smash! is an achievement in Halo 4. It is awarded for killing three Promethean Crawler in one hit with the Gravity Hammer on the eighth campaign level, Midnight, during campaign solo. The achievement is worth 20 Gamerpoints. It is represented by the Gravity Hammer.

Trivia
The achievement's title is likely a reference to Marvel Comics' Hulk character, who is famous for screaming "Hulk, Smash!" when enraged or preparing to attack his foes.