Finally completed the campaign on Legendary.
STORY (Spoilers)
I wasn't a fan. I understand what 343i was trying to do, but I just don't agree with a lot of the choices they made.
The story really isn't clear, and there a lot of interpretations out there, so I guess I'll give a quick run-down of how I understand it, and people can correct me if they feel differently. Spoilers ahead.
Sometime after the events of Halo 5, Cortana cripples the UNSC and takes out major installations, including Spartan training satellites and major cities on Earth. She also obliterates the Brute homeworld when Atriox refuses to submit to her. The UNSC regroups and makes a plan to use a clone of Cortana to enter the systems she controls and trap her so she can be captured and deleted, after which the clone will self-delete. They track her to one of the rings and carry out the first phase of the plan, which works.
Before the 2nd phase can be completed, Atriox and his forces attack the UNSC forces at the ring and destroy them, including tossing Chief out into space. During this attack, 'the pilot', an engineer on the Infinity UNSC craft steals a pelican and flees. Atriox's forces land on the ring and eliminate the UNSC forces, before Atriox confronts a trapped Cortana. This is where shit gets incoherent... Atriox and Cortana talk, but it's not clear what Atriox wants out of Cortana. He claims he knows more about the ring than she does, as well as the secrets within. Given he released the Harbinger and sets the events of the game in progress, I'm not sure why he kept her alive or needed her. He could have just deleted her and moved on. Instead she sacrifices herself and blows up a portion of the ring, supposedly killing Atriox in the process, all while ensuring the survival of her clone.
6 months later, we take control of Chief after the pilot has found him. We find the weapon, discover everything that has happened before, and prevent Atriox's successor Esheram from taking control of the ring and completing Atriox's plan. Turns out the plan was to work with the Harbinger, an alien he had released, to release the Endless, a race with a hate-on for the forerunners. We succeed in taking out Esheram and the Harbinger, but not before the Harbinger manages to free some kind of sentient... orb of light, speaking for the endless. The Harbinger dies saying the endless have already won.
Post credits: We see Atriox entering a vault and awaking the Endless.
Post credits Legendary: The same scene but with voice-over between Despondent Pyre (who we met during the game before they were tortured to death) and Grand Edict, who is either a forerunner or another AI. They speak of time as a construct they cannot control, but hint that the Endless can. They also hint that the Endless could not be killed by the Halo array, and thus must be imprisoned by it. Further, Despondent Pyre was supposedly assisted in their duties by an AI called Offensive Bias, which has history in the Halo lore outside the games (ugh). There is a date added as well, roughly 100,000 years before the events of the first Halo game, but it's unclear of that date is referring to the new voice over, or to Atriox awaking the Endless. If it's the latter, it suggests that Atriox went back through time. Personally, I think it's just a reference to the added audio.
I'll just break it down into positives and negatives:
+The opening where Chief gets his ass kicked
+The pilot actually reacting like the average person would in his situation
+Chief acting like a stoic single-minded soldier the entire time
+'The Weapon's upbeat naive personality
+Chief learning to trust 'The Weapon' given what happened with Cortana
+Chief admitting his guilt for failing to stop Cortana
+'The Weapon' learning who she is, and the baggage that comes with it
+The pilot's reveal and character growth
-Almost everything important happens off-screen, and is revealed through flashbacks
-Esheram is a boring, one-note villain
-Really, another ring holding a secret, powerful ancient alien race? We're doing this again?
-The Harbinger and her flying monkeys feel completely pointless
-Cortana crippled the entire UNSC, but Atriox basically caught her unawares in a room on a ring? How? We're not told.
-Cortana suddenly shifting from space-fascist to 'I'm so sorry, I made a mistake' and helping Chief was laughable.
-Every attempt the game made to make us sympathize with Cortana fell flat
-Why was Cortana on this ring in the first place? In the flashback, Atriox knew more about the secrets within than she did. If she didn't know about the secret, why did this AI that could inhabit any forerunner installation choose this one? Do they even explain this?
In all honesty, the story told in the flashbacks seems like it would have been a more interesting mission than the one we were on.
I would have rather been Master Chief, taking a Cortana Clone onto the Ring Cortana was on, fighting through Cortana's Promethean forces with AI soldiers and AI Spartan IIIs (not controllable, just better versions of the AI grunts basically), completing the first phase of my mission on this Halo Installation, only to be interrupted by Atriox' Banished fleet, getting caught in a 3-way war. With Cortana contained by The Weapon, you put the mission on hold (probably to protestations of other military personnel) to head back into orbit to help the UNSC against the Banished. You fight Atriox, he kicks your ass, just like in the opening of this game, you wake up 6 months later, and THEN the mission becomes retrieving the Weapon, figuring out what the hell Atriox wants with this ring and Cortana, and dealing with the fact that the Banished won against the UNSC.
I just want to feel like more of an actor in this story than I am in Halo Infinite. I'm basically just a guy picking up bits and pieces of the important shit that already happened without me.
Oh, and one last thing. I know this is a minority opinion among players that have played every Halo since Combat Evolved, but.... Chief's Armor in Halo 4 and 5 was/is better than his classic 'Ninja Turtle' armor. I'd honestly pay like $20 in the store to give Chief his Halo 4 armor and armor color.