Chief, Smash!

Chief, Smash! is an achievement in Halo 4. It is awarded when, in Mission 8 in solo Campaign, the player kill 3 Crawlers in one hit with the Gravity Hammer. The achievement is worth 20 Gamerpoints. It is represented by the Gravity Hammer.

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