The Halo 4 Launch Gameplay Trailer is a trailer of Halo 4. It was released two weeks before the game's release. It shows several aspects of the campaign and multiplayer.

Transcript

Open to John-117, holding Cortana's data crystal chip displaying her avatar, and standing amid the wreckage of the UNSC Forward Unto Dawn on the inner surface of Requiem.

• John-117 (voiceover): "Where are we?"

Cut to numerous vistas within Requiem. Cut to John-117 looking at Halo Installation 03.

• Didact (voiceover): "And so you come at last."

AN ANCIENT HATRED

Cut to the Didact's Cryptum rising beyond a cliff. A startled John quickly turns around and raises his assault rifle in alarm. The Cryptum flies away at a supersonic speed.

• John-117 (voiceover): "Cortana, what is it?"

CONFINED FOR A MILLENNIA

Cut to John-117 entering a Forerunner chamber. Fades to John inspecting a Cryptum.

UNLEASHED IN A MOMENT

Cut to John activating the Cryptum, after which it emits a large burst of energy. He takes cover.

• Didact (voiceover): "We are Forerunners, guardians of all that exists."

Cut to multiple Promethean Knights translocating to the immediate vicinity surrounding John, each on a pillar. John takes aim at one of them. It translocates and disappears.

Cut to the view from John's HUD as a Promethean Knight tackles John and opens its face-plate, revealing blue screaming skull.

"BEST ACTION GAME"
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Cut to a chaotic Dominion game on Longbow. Cut to a multiplayer game on Meltdown, where a Spartan-IV is using the Hardlight Shield to protect himself from a Mantis' attack. Cut to a Capture the Flag game on Ragnarok, where a Warthog is speeding to Blue Base with a Red flag carrier on its passenger's seat.

"ABSOLUTELY INCREDIBLE"
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Cut to John-117 sliding off a Lich at a high altitude. He stops his fall by slamming his combat knife into the Lich's hull. Cut to John performing an assassination on a Promethean Knight: he tears free the arm bearing the Knight's hard light blade and stabs the Knight with it.

"THE FUTURE OF GAMING"
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• Didact (voiceover): "Humanity stands as the greatest threat in the galaxy."

Cut to John-117 as he jumps off a malfunctioning Ghost. Cut to John using a jet pack to get up a sand hill. Cut to a Promethean Knight killing a Ghost operator by slashing its blade at the operator. Cut to a Knight as its jumps to attack an enemy with its blade. Cut to another Knight as it slashes its opponent. Cut to John taking cover from the aforementioned Cryptum. Cut to armor pieces fastening around the Didact's arms. The Didact, mostly off-screen, then uses a constraint field to capture and immobilize John, causing him to float through the air for several meters. Cut to a view from behind the Didact's shoulder, who now inspects the still-immobilized John.

• Didact (voiceover): "The Forerunners have returned."

Cuts to Didact's "unbound" icon, glowing orange and spinning upside down.

AN ANCIENT EVIL AWAKENS

The icon flashes and the scene cuts to black.

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