Mission B-4: Knockin' on a Forerunner Door | Halo Alpha | Fandom

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Mission B-4: Knockin' on a Forerunner Door is the tenth level in Halo: Spartan Strike.

Sources[]

List of campaign levels and multiplayer maps in the Halo series

v d e Halo: Combat Evolved (PC • Custom Edition • Anniversary • TMCC)

Campaign	The Pillar of Autumn • Halo • The Truth and Reconciliation • The Silent Cartographer • Assault on the Control Room • 343 Guilty Spark • The Library • Two Betrayals • Keyes • The Maw

Multiplayer	Battle Creek • Blood Gulch • Boarding Action • Chill Out • Chiron TL-34 • Damnation • Danger Canyon (PC) • Death Island (PC) • Derelict • Gephyrophobia (PC) • Hang 'Em High • Ice Fields (PC) • Infinity (PC) • Longest • Prisoner • Rat Race • Sidewinder • Timberland (PC) • Wizard

Anniversary Multiplayer	Battle Canyon • Breakneck • High Noon • Penance • Ridgeline • Solitary • Installation 04 (Firefight)

v d e Halo 2 (Vista • Anniversary • TMCC)

Campaign	The Heretic • The Armory • Cairo Station • Outskirts • Metropolis • The Arbiter • The Oracle • Delta Halo • Regret • Sacred Icon • Quarantine Zone • Gravemind • Uprising • High Charity • The Great Journey

Multiplayer	Ascension • Backwash • Beaver Creek • Burial Mounds • Coagulation • Colossus • Containment • Desolation • District (PC) • Elongation • Foundation • Gemini • Headlong • Ivory Tower • Lockout • Midship • Relic • Sanctuary • Terminal • Tombstone • Turf • Uplift (PC) • Warlock • Waterworks • Zanzibar • Example (PC, Official Custom Map)

Anniversary Multiplayer	Bloodline • Lockdown • Remnant • Shrine • Stonetown • Warlord • Zenith • Skyward • Nebula • Awash

v d e Halo 3 (Mythic • TMCC)

Campaign	Arrival • Sierra 117 • Crow's Nest • Tsavo Highway • The Storm • Floodgate • The Ark • The Covenant • Cortana • Halo

Multiplayer	Assembly • Avalanche • Blackout • Citadel • Cold Storage • Construct • Epitaph (Epilogue) • Foundry • Ghost Town • Guardian • Heretic • High Ground • Isolation • Last Resort • Longshore • Narrows • Orbital • Rat's Nest • Sandbox • Sandtrap (Sand Tarp) • Snowbound (Boundless) • Standoff • The Pit (Pit Stop) • Valhalla

v d e Halo Wars (Definitive Edition)

Campaign	Alpha Base • Relic Approach • Relic Interior • Arcadia City • Arcadia Outskirts • Dome of Light • Scarab • Anders' Signal • The Flood • Shield World • Cleansing • Repairs • Beachhead • Reactor • Escape

Multiplayer	Chasms • Crevice • Barrens • Beasley's Plateau • Blood Gulch • Blood River • Exile • Fort Deen • Frozen Valley • Glacial Ravine • Labyrinth • Memorial Basin • Pirth Outskirts • Repository • Release • Terminal Moraine • The Docks • Tundra

v d e Halo 3: ODST (TMCC)

Campaign	Prepare To Drop • Mombasa Streets • Tayari Plaza • Uplift Reserve • Kizingo Boulevard • ONI Alpha Site • NMPD HQ • Kikowani Station • Data Hive • Coastal Highway

Firefight	Alpha Site • Chasm Ten • Crater • Last Exit • Lost Platoon • Rally Point • Security Zone • Windward

v d e Halo: Reach

Campaign	Noble Actual • Winter Contingency • ONI: Sword Base • Nightfall • Tip of the Spear • Long Night of Solace • Exodus • New Alexandria • The Package • The Pillar of Autumn • Lone Wolf

Multiplayer (Community)	Anchor 9 • Breakpoint • Boardwalk • Boneyard • Condemned • Countdown • Forge World (Asylum • Hemorrhage • Paradiso • Pinnacle • The Cage) • Highlands • Powerhouse • Reflection • Spire • Sword Base • Tempest • Zealot

Firefight	Beachhead • Corvette • Courtyard • Glacier • Holdout • Outpost • Overlook • Unearthed • Waterfront

Halo: CEA Multiplayer	Battle Canyon • Breakneck • High Noon • Installation 04 (Firefight) • Penance • Ridgeline • Solitary

v d e Halo 4 (TMCC)

Campaign	Prologue • Dawn • Requiem • Forerunner • Infinity • Reclaimer • Shutdown • Composer • Midnight • Epilogue

Spartan Ops	Departure • Artifact • Catherine • Didact's Hand • Memento Mori • Scattered • Invasion • Expendable • Key • Exodus

War Games	Abandon • Adrift • Complex • Daybreak • Erosion (Ascent • Grifball Court) • Exile • Forge Island • Harvest • Haven • Impact (Relay) • Landfall • Longbow • Meltdown • Monolith • Outcast • Perdition • Pitfall • Ragnarok • Ravine (Settler) • Shatter • Skyline • Solace • Vertigo • Vortex • Wreckage

v d e Halo: Spartan Assault

Operation A: Umbra	Assault on CF-32 • The Mirror Mantle Counter-Assault • Reinforcement of the Perch • Live to Fight • The Last Stand

Operation B: Tempered Shield	Siege of Faraday • Reactor Field Relief • Hunt for the Sangheili Command • Battle for Epsilon Expanse • Battle at Red Slate

Operation C: Monolith	Descend from the Perch • Spirit Graveyard Stand-Off • Assault on the Supply Lines • Infiltration of the Covenant Perimeter • Superstructure Stand-off

Operation D: Captured Chance	Escape from the Southern Fields • Liberation of Faraday • Assault on the Covenant Landing Zones • Escape from Faraday • Defense of the Enemies' Airbase

Operation E: Frostbite	Hunt for the Phantom • The Scorching of the Thicket • Infiltration of the Cult Leader's Base • Hunt for the Cult Leader • Battle for the Moon

Operation F: Hydra	Battle at the Arid Sea • Breach of the Bulwark • Superstructure Assault • Infiltration of the Cistern • The Source

Co-op Missions	Checkpoint • Holding the Fort • Structural Integrity • Transmission Interrupted • Power Net

v d e Halo: Spartan Strike

Operation A: Orphic Spear	New Mombasa Nightmare • On Top of the World • Conduit Reversal of Fortune • Wounded Quarry • Last Exit

Operation B: Steadfast Persuit	Gamma Halo • Signal Fires • Lockout Knockin' on a Forerunner Door • Dormant • Run Through the Jungle

Operation C: Valiant Hammer	All the Way to the Altar • Up in the Air • Til Death Do Us Part Leave 'em at the Altar • Deliverance • Don't Touch My Ride

Operation D: Adamantine Shield	The Way Home • Serve and Protect • We Need to Talk Reverse Course • The Lion's Den • End of the Line

Operation E: Brother's Keeper	Behind Enemy Lines • Glyphology • Foothold Finders, Keepers • Portal Control • Hold the Line

v d e Halo Online

Multiplayer	Diamondback • Edge • Guardian • High Ground • Icebox • Last Resort • Narrows • Reactor • Standoff • The Pit • Valhalla

v d e Halo - Interactive Strategy Game

Jericho VII • Defense of Castle Base • The Hidden Artifact of Reach

v d e Halo 5: Guardians (Forge)

Campaign	Osiris • Blue Team • Glassed • Meridian Station • Unconfirmed • Evacuation • Reunion • Swords of Sanghelios • Alliance • Enemy Lines • Before the Storm • Battle of Sunaion • Genesis • The Breaking • Guardians

Arena Multiplayer	Alpine (Basin • Deadlock • Guillotine • Orion • Pegasus • Scavenger) • Barrens • Breakout Arena (Altitude • Crossfire • Gambol • Trench • Trident) • Coliseum • Depths • Eden • Empire • Fathom • Glacier (Antifreeze • Boulevard • Fracture • Recurve • Grifball Court) • Mercy • Molten • Overgrowth (Malignant) • Parallax (Altar • Eagle Square • Entombed • Viking) • Plaza (Nerve Center) • Regret • Riptide (R.I.P.TIDE) • Stasis • The Rig • Tidal • Torque • Truth • Tyrant

Warzone	Attack on Sanctum • Battle of Noctus • Escape From A.R.C. • March on Stormbreak • Raid on Apex 7 • Skirmish at Darkstar

Warzone Assault	Temple • Urban • Dispatch • Summit • Array • Prospect

v d e Halo Wars 2

Main Campaign	The Signal • A New Enemy • Ascension • One Three Zero • The Cartographer • Lights Out • From the Deep • Hold the Line • Under the Dark • The Foundry • The Halo • Last Stand

Operation: Spearbreaker	Gatecrashers • Not on My Watch

Awakening the Nightmare	What Could Go Wrong? • Fighting Retreat • Light the Fuse • The Archive • Manifestation

Multiplayer	Ashes • Badlands • Bedrock • Fissures • Frontier • Highway • Mirage • Rift • Sentry • Vault

Blitz	The Proving Grounds

Terminus Firefight	The Last Bastion

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