Mission 13: Assault on the Supply Lines

Assault on the Supply Lines is the thirteenth mission of Halo: Spartan Assault. If the player kills a convoy target with every stationary gun in the level, the Never Knew What Hit Them achievement unlocks.

Introduction
South of the Forerunner structure, a collection of thousands of spiked rock formations known as the Basalt Maze protruded from the moon's thick ice. Covenant supply lines were running straight through the Maze to set up more defenses around the Forerunner structure.

Spartan Davis connected with UNSC combat technicians who believed they could render the Forerunner structure inert. They just needed the chance to get inside the structure. Getting the combat engineers close to the Forerunner structure would be extremely difficult, so Davis created a diversion to provide them with the best chance. The Basalt Maze provided an ideal location for his plan.