Mission 30: Hold the Line

Hold the Line is the thirtieth mission of Halo: Spartan Strike and the sixth of Operation E: Brother's Keeper.

Introduction
New Phoenix. 2557. A fellow Spartan is here helping the research team close the portals that have unleashed a Promethean invasion. Stop Prometheans from entering the inner campus of this ONI base and save New Phoenix from being overrun.

Assault Op 1
Kill 25 Crawler Alphas with a Machine Gun Turret.

Assault Op 2
Destroy 5 Shade Turrets with a Grenade Launcher.

Assault Op 3
Kill 20 Elites with a Battle Rifle.