Shootout in Valhalla
Picking up from the previous chapter, Spartan Jared Miller informs Commander Palmer that a large Covenant force is closing in on Crimsons location. Automated defense turrets retrieved from Mountain Squad's crashed Pelican are activated by the Spartans throughout the canyon in order to shore up their defenses. As several large Covenant drop pods and Phantom dropships arrive, carrying an assortment of Covenant Storm units, Palmer requests from Miller a proper assessment of all enemy forces in the area. Miller immediately responds by saying they are considerable amounts of Covenant headed towards the Spartans location. Palmer contacts Robert Dalton, asking if her "emergency dispatch" is ready for departure. Dalton acknowledges and says it is leaving the UNSC Infinity.
The situation turns grim as more Phantom dropships arrive, including one carrying a Wraith. Fireteam Crimson do their best to defend the area by keeping close to their turrets, making use of captured Covenant equipment, and using a variety of UNSC weaponry provided from the crashed Pelican. Palmer then informs the team that her "emergency dispatch" has arrived. A lull in the fighting has her bring in four Pelican transports, each ferrying a Mantis Armored Defense System. As Crimson make use of the powered exoskeletons, multiple waves of Banshee fighters, supported by Phantom gunships, arrive in an attempt to re-take the canyon. As the fighting continues, Dalton comes online and informs Palmer that a Covenant CRS-class light cruiser has been spotted within the vicinity. Miller confirms the report, saying it is closing in on Crimson's location.
Commander Palmer then orders a Pelican for Crimson's extraction. Dalton, however, tells her that it would be a suicide mission up against the Covenant cruiser. As more Covenant reinforcements arrive, Miller tells Palmer an idea of his to assist Crimson. Crimson continues to defend their position as the Covenant relentlessly send in waves of reinforcements at them. As the Covenant cruiser comes within range of the canyon, Palmer has Infinity Sub-Vessel 3 fire at the unsuspecting ship. The cruiser is destroyed in a series of explosions as it falls apart towards Requiem's surface. Crimson clears out the remaining Covenant and a Pelican is sent for their extraction. As they wait, Miller receives solid information relating to Parg Vol's whereabouts. Palmer, enthusiastic, has Crimson depart for Parg Vol's location instead of returning to the Infinity to hunt the Sangheili down.
All dialogue is spoken through the COM.
A Covenant drop pod arrives and drop off troops in the middle of the canyon.
The player activates the first turret.
The player activates the second turret.
The player activates the last turret.
A Phantom approaches and drops reinforcements.
Another Phantom drops reinforcements, including a Wraith
Reinforcements continue to arrive. The player kills most of them.
Markers appear on the last Covenant. The player kills the last of them.
A beacon appears at the top of the hill. The player reaches it.
Three Pelicans approach Two Giants. They swoop in and deposit Mantises.
if the player has activated the RvB Easter egg:
The player fights off wave after wave of Covenant Banshees and Phantoms.
Once most of the Covenant are finished:
After Crimson clears out the remaining Covenant from the initial wave, another enemy drop pod arrives. This one deploys a squad of Hunters. Shortly after the Hunters are killed, more drop pods descend and deploy additional enemy troops, including Elites and more Hunters.
A Phantom arrives and drops off a Wraith, along with additional ground forces.
After the Wraith is destroyed:
More drop pods arrive. Another wing of Banshees attacks.
A waypoint appears at the seaside tower.
Waves of Phantoms and Banshees attack from the cruiser.
Beacons appear on the final wave. The player destroys all Covenant air forces.
A missile streaks across the sky and destroys the cruiser.