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. 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.

In the Prima official guide the achievement is titled "Whack A Mole" and the description reads; In mission 9 kill 5 crawlers with one hit of the gravity hammer. The achievement was changed late in production.