Halo Campaign Evolved: Original Missions Story Index

Guide briefing

Original Campaign Story: Mission-by-Mission

Follow the original campaign from the Pillar of Autumn through Halo’s destruction and the post-credits survival reveal.

The UNSC Pillar of Autumn arrives near an unknown ring while a Covenant fleet closes in.

1Captain Keyes entrusts Cortana to the Master Chief so she cannot be captured with the ship.
2The Chief fights to a lifeboat and escapes before the Autumn crashes on the ring.

The lifeboat survivors are scattered across Halo after the crash landing.

1The Chief locates stranded Marines and protects them from Covenant attacks.
2He helps evacuate the survivors and establishes contact with the remaining UNSC forces.

The Covenant have captured Captain Keyes aboard the cruiser Truth and Reconciliation.

1The Chief boards the Covenant ship and frees Keyes from its brig.
2Keyes explains that the Covenant call the ring Halo and believe it is a powerful weapon.

The UNSC needs the location of Halo’s control room before the Covenant can use it.

1The Chief assaults an island installation and opens the route into its underground complex.
2The Silent Cartographer reveals the control room’s location elsewhere on the ring.

The Chief and Cortana reach Halo’s control room after fighting through Covenant defenses.

1Cortana enters the control system and begins examining Halo’s network.
2She detects an urgent threat and sends the Chief to find Captain Keyes while she remains behind.

The Chief searches a swamp facility for Keyes and the missing Marine squad.

1A helmet recording shows that the Marines opened a containment room and were overwhelmed by the Flood.
2The monitor 343 Guilty Spark transports the Chief away to help contain the outbreak.

343 Guilty Spark says the Index is required to activate Halo and stop the Flood.

1The Monitor guides the Chief through the Library to retrieve the Index.
2The Chief returns to the control room believing activation will destroy the Flood.

The Chief brings the Index to the control room while Cortana remains inside Halo’s systems.

1Cortana stops the Chief from using the Index to activate Halo.
2She explains that Halo starves the Flood by killing its sentient food, so they plan to destroy the ring with the Autumn’s reactors.

The Chief needs Captain Keyes’s neural implants to authorize the destruction of the Autumn.

1He returns to the Truth and Reconciliation and finds that the Flood have absorbed Keyes.
2The Chief retrieves the captain’s neural implants and escapes the Covenant cruiser.

The Chief and Cortana return to the wrecked Pillar of Autumn to destroy Halo.

1The Chief destabilizes the Autumn’s fusion reactors instead of activating Halo.
2He escapes in a fighter as the cruiser explodes and shatters the ring.

After Halo is destroyed, the publisher’s archive enters its Post Credits segment.

1343 Guilty Spark is shown drifting through space beside a gas giant.
2The scene confirms that the Monitor survived the destruction of Installation 04.