The Storm (Level)

The Storm is the fourth campaign mission of Halo 3.

It begins with UNSC Warthog convoy moving to Voi, whose objective is to punch through the Covenant Loyalist anti-aircraft defenses that surround the Ark and allow Commander Miranda Keyes to pass through unscathed to the Ark. SPARTAN-117 leads a dozen Marines mounted on Mongooses and other ground attack vehicles to down a Covenant Scarab walker, destroying it before engage an anti-aircraft emplacement ringed with a heavy contingent of Covenant Loyalist warriors, including high-ranking and powerful Brutes (including a Brute Chieftain armed with a Gravity Hammer) and a pair of Hunters. After defeating the garrison, the UNSC forces hit the emplacement on its weak spot, disabling it, and allowing Commander Keyes to slip past.

Upon completing it on the Normal, Heroic, or Legendary difficulties, the player will earn the "Assault" achievement and 30 Gamerpoints.