I'm sure you aren't the only one, but there are not many of you.
The question is what other Halo campaigns you've played? Not that you aren't allowed to have an opinion if you haven't played them all. You're certainly allowed to enjoy the game.
But if you enjoyed Halo 5, I wanna know what you'll think of Halo 2 or Halo 3 when you play it :)
Yeah, I've played every Halo campaigns outside of Halo Wars (Halo Wars 1 very briefly. I'm not great with real time strategies). I started at Halo: CE, so I've witnessed many changes.
I loved Halo 2, and would rank Halo 2 at the top for overall experience. The story was pretty good, and the campaign levels were long and beautiful. The story was coherent throughout. I enjoyed Halo 2 more than Halo 5. I loved how difficult it was. It was soooo hard on Legendary, but so good. The remastered campaign looks phenomenal.
Halo 3 was a step down in campaign experience, but it made up for a great multiplayer experience, probably the best multiplayer experience. Halo 3 campaign was kinda boring. Sometimes, campaign tells me go there, but the mission isn't clear. The graphics were ugly on the soldiers. I don't know why. The Brutes were dumb and disappointing enemies. They were a step from Halo 2 Brutes. Miranda Keyes and Sergeant Johnson died in an anti-climatic way. I have no idea why Miranda flew into the Forerunner building when Master Chief was actually handling it just fine. Then she died. I was like, "What?" It felt like the writer wanted nothing to do with Miranda after showing her how cool she was. Sergeant Johnson's death was pathetic. If he had to die, I'd make an effort to make him go out with a bang. 343 Guilty Spark just made a PEW at Johnson, and that was it. I understand that 343 is powerful, but still. I liked some levels like the Ark level and the final level. Two great things about Halo 3 are that it ended great and had beautiful levels. I would put Halo 3 as the least favorite campaign.
I probably get hate for this, but I don't care.