The Halo

The Halo is the eleventh and penultimate campaign level in Halo Wars 2.

Transcript
{Mission Briefing}
 * Captain Cutter: "We've stopped the the tide of Banished reinforcements arriving on the ring, but Atriox has already managed to gain a foothold near Alpha Base."
 * Isabel: "Our troops have been trying to reach the ring's Control Rool, but the routes are cut off by a Banished shield."
 * Anders: "We've got to get that Control Room so I can deactivate the Halo's firing systems and plant our signal beacon. If I can't do that, we won't be sending an SOS back home - we'll be sending a bery large - and very live - bomb."
 * Captain Cutter: "If Atriox gets control of this Halo, he'll be holding a gun to the head of all life across hundreds of light years. We have to clear the Banished off this ring. It's up to you, Red Team."

Mission Summary

Get Professor Anders to the Control Room and clear the Halo of all Banished forces.

Scouting Report

The Halo will have deployed Forerunner defenses to protect itself.

{In-game cutscene}

The camera flies over several locations where the UNSC and the Banished are clashing with each other.


 * Atriox: "Captain. Your troops fight with a tenacity that amost matches my Jiralhanae brothers. I'm impressed. [growls] You and I are survivors, and I respect that. so I offer you a boon. Take your troops, take your ship, leave now and I will not hunt you down."


 * Captain Cutter: "Did you make the same offer to the people you slaughtered at that outpost? We're not going anywhere. We're only talking right now because you know I'm going to take this Ark from you."


 * Atriox: Hahahaha! Luck! Treachery! These are the only reasons you still live, Cutter! Very well, I admire your spirit, but you've just sentenced your little ship to oblivion!

''Cuts to Alpha Base, where UNSC forces, along with Douglas-042 and Alice-130, are defending it. Douglas assassinates a Jiralhanae Warlord, while Alice kills a Sangheili with her machine gun."


 * Douglas-042: "Stay down!"

A Suicide Unggoy comes close to Douglas, but Alice kills it before it can reach Douglas, saving him.


 * Alice-130: "It's a wonder you stayed alive without me."

Douglas kills more enemies with his magnums.


 * Douglas-042: "Always got to show off, eh, Alice?"

''A Mgalekgolo and an Unggoy Minor appear in front of them. Douglas kills the Minor.''


 * Alice-130: "Who gets to take this one?"

Jerome-092 jumps over the Mgalekgolo and kills it with his M6 Spartan Laser.


 * Jerome-092: "I figured you two have had enough fun."

Red Team finally reunites.

{Gameplay}


 * Jerome-092: "Spirit of Fire Actual, we've secured the base, but our forces are scattered."
 * Captain Cutter: "Regroup everyone you can, but the priority is getting to that Control Room and disarming the Halo before it heads towards human space."
 * Jerome-092: "We'll get it done, sir."

A Pelican drops off two squads of Marines while UNSC defense forces around Alpha Base hold the perimeter.
 * Captain Cutter: "We're halfway there, troops. Stay the course."
 * Squad Leader: "Red Team, we have hostiles at the barrier! Won't be able to hold it for long!"
 * Jerome-092: "Hold the line, Red Team!"

''Banished start to attack from all directions. Four Pelicans arrive, dropping reinforcements to strengthen the UNSC defense perimeter.''

While holding the Banished off, the UNSC hears something.
 * Douglas-042: "Uh, what's that sound?"

The Energy Shield storing a Retriever Sentinel goes offline, releasing it to the battlefield.
 * Anders: "The installation has released a Retriever! They're the Ark's most powerful Sentinels!"
 * Douglas-042: "Because we didn't have enough going on"
 * Anders: "Heightened security protocols kicked in as soon as Halo left the Ark, but that may work in our favor."

''UNSC forces quickly assemble their defenses, but they are overwhelmed by the Retriever Sentinel as it heads for the UNSC base. Red Team quickly assembles all Anti-Air units to prevent it from reaching the base.''

Once Retriever Sentinel's HP reaches 25%, it will retreat immediately for repairs.
 * Alice-130: "That wasn't easy."
 * Anders: "It's only retreated for repairs. It'll be back soon."

Anders marks three control towers.
 * Anders: "I've marked three control towers. If you can secure those, I should be able to take control the Retriever. Until then, keep out of its way!"
 * Alice-130: "You know, just for once I'd like a straight up fight. There's the enemy, shoot the enemy, go home."

The surviving UNSC Defense Forces are now under the player's command.

While assembling forces, the Retriever Sentinel is fully repaired.
 * Anders: "Be on the lookout for that Retriever, it'll consider everyone here a threat!"

After assembling forces, the UNSC goes to one of the Control Towers, eliminating any Banished resistance, and captures it.
 * Jerome-092: "That's the first tower, Professor."
 * Anders: "Okay, that's opened up the system to me. But i'm still locked out from the full solution. If you take the other towers, i will be able to get control faster!"

Leader Power Avaiable

 * Restoration Drones I, II and III
 * Archer Missiles I, II and III
 * Battle Hardened I and II
 * Lotus Mine I and II
 * ODST Drop
 * Turret Drop I and II
 * R&D I, II and III
 * Holographic Decoy I and II

Strategy

 * When Retriever Sentinel is patrolling around the field, ensure that player avoid it at any costs. It usually patrols around three Control Towers so make the timing count when Retriever Sentinel is away.
 * Bravo Base is located on the North-East of Alpha Base. It's better to rescue them first to gain more resources flow and reinforcements.
 * The Retriever Sentinel will never venture towards Control Tower A, but Banished forces will constantly be dropped off near the point.
 * Marine upgrades only apply to units trained from the base, not ones gained during the mission. Be wary of that.