From Halopedia, the Halo wiki

This article is about the Halo: Spartan Strike campaign mission. For the famed Halo 2 multiplayer map, see Lockout.


Gamma Halo


Knockin' on a Forerunner Door

SS M9 Infobox.png


Halo: Spartan Strike


Unidentified Spartan-IV


July 2557(Actual events)
December 2557(Simulation)


Installation 03


Find a way inside the gated Forerunner site.

Spartan Strike scores
HSA Star Gold.png75,000 • HSA Star Silver.png60,000 • HSA Star Bronze.png45,000

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Lockout is the ninth mission of Halo: Spartan Strike and the third of Operation B: Steadfast Pursuit. A Spartan-IV must enter a Forerunner site to locate the Conduit.


The Conduit signal is coming from somewhere within a mysterious, gated Forerunner site. Find a way inside.


The Spartan-IV begins standing at the Forerunner gate.

  • Lieutenant Kwon (COM): "The Conduit signal's coming from the other side of the light bridge, Spartan. You know? A Wraith mortar should be big enough to take out that core and lower the gate. Spartan, a Marine squad is ready to lend you a hand. I set a waypoint to their location."

⚠ Meet up with the marines

The Spartan makes his way to the Marine squad fighting his way through several Covenant. Encountering several cloaked Elites

  • Lieutenant Kwon (COM): "Stay alert for cloaked Elites in the area, Spartan."

The Spartan then arrives at the Marine squad location to find they moved on to another location and are under fire.

  • Lieutenant Kwon (COM): "The Marines secured a Wraith. But they're taking heavy fire. Hurry!"

⚠ Reach the marines

The Spartan then heads to the new location of the Marine squad.

  • Lieutenant Kwon (COM): "The Covenant are regrouping for an attack. Help the Marines protect the Wraith!"

⚠ Secure the area

The Spartan then assists the Marine squad in protecting the Wraith they secured.

  • Lieutenant Kwon (COM): "All clear! The Wraith is secured. Good work Spartan."

⚠ Go to the captured Wraith

The Spartan then heads to the Wraith they secured.


Level ends

Assault Ops[edit]

Assault Op 1[edit]

Kill 5 Grunt Ultras with Plasma grenades

Assault Op 2[edit]

Kill 15 Jackals with grenades

Assault Op 3[edit]

Kill 20 Stealth Elites with a Needler