It feels useless to reiterate why this game fumbled so hard. Cortana becoming a space dictator just feels weird. The guardians feel like an afterthought and the campaign was extremely underwhelming. ALSO, why have a bunch of characters that weren't present in previous games show up here with little context. I don't mind a bit of trans-media storytelling but at least make it sensible for someone who can't read (me.)
I'm not gonna talk about the multiplayer (I kinda liked it, I never had an issue with the microtransactions when I was playing since I didn't have disposable income back then.)

Halo 5 was the first and only Halo game where I played the campaign once and did not ever play it again. The campaign felt like it was being pulled in so many different directions that it didn't feel cohesive, and later missions just turned into throwing a bunch of Wardens at the player. It took me a while to come to terms with the story, especially after the Hunt the Truth campaign teased a completely different one. I think an especially huge miss was not explaining any of the gap between 4 and 5 in game and instead relying on players to read comics and other outside fiction. I have read every Halo book, many multiple times, and was hugely disappointed to find out that Chief and Blue Team's reunion was essentially brushed over in a comic series. I think I would be ok with what the story started, but, in typical 343 fashion, they drop all of the story threads in Halo Infinite, so Guardians just becomes a weird canon island.

Halo 5's multiplayer was a blast. It was incredibly fast and really emphasized the new movement system. While some movement mechanics were definitely overpowered such as the charge and ground pound, 5's multiplayer was so fun to play at a high level because it was so fast.

The REQ system was a frustrating way to unlock customization options, I ended up using a spreadsheet which tracked my unlocks and told me the most optimized way to purchase the three tiers of REQ packs in order to maximize my unlocks. It made sense for weapons, vehicles, and other tools specific to Warzone, but locking customization items behind random chance was a big miss in my opinion.

Warzone was a blast, especially with a group of friends who could coordinate well. Unfortunately it was overshadowed and ruined by full teams of 12 dominating and farming teams of random players. Warzone games were very easy to get snowballing, and you could have one team pulling out highly overpowered tanks and other vehicles while the other is essentially stuck getting spawn killed in their base with nothing but ARs.

Warzone Firefight was an interesting new take on the firefight formula from previous Halo games, and it definitely made using some of the highest tier weapons and vehicles feel much more fun because you weren't afraid to lose them, generally.

Halo 5's forge was another huge step, and the PC forge tool, Halo 5: Forge was a game changer for making content.

I really loved working hard with a large group of people to unlock the Achilles armor and helmet, and it will forever be one of my proudest gaming accomplishments.

343 released an announcer pack for a few dollars which added a few new announcers to multiplayer, Buck and Exuberant Witness were my favorites by far. Something similar today would be significantly more expensive.

I would love to see H5 make a PC release one day, and I think the high speed of the gameplay would be very popular on PC. Halo 5: Forge was passable for forging, but custom games were rough because H5F suffered from severe amount of input lag, the engine was not fully PC-ready.

Horribly over-hated game. I honestly think this might be tied with Halo 2 for the best gun play in the entire series, and that is partially due to the amazing sound design and feel the guns have. For the first time in a Halo game, the basic assault rifle is actually a fun and viable weapon to use against other spartans. It feels like more than any other halo game, you can use any weapon you want and get good results from them which is significantly more interesting than everyone just using the battle rifle with an occasional power weapon. The advanced mobility is also pretty well done too, even if it isn't quite as good as something like Titan fall. I still think Halo 2 is better over all, but this games multiplayer and gameplay did not deserve all the hate it got.

História horrorosa, o marketing todo que foi construído pra no final o produto ser totalmente diferente é o que decepciona, Locke é dito como um caçador impiedoso e que ia trazer Chief pra justiça por ter traído a UNSC, lembrando que o marketing dizia que o Chief nunca e nem foi um herói, lembro de ter hypado tanto isso pra no final o jogo final não ter ABSOLUTAMENTE NADA DISSO chega parecer piada, outra coisa paia nesse jogo é que os personagens novos não são desenvolvidos, o jeito que eles são "desenvolvidos" são através de diálogos durante o combate, QUEM QUE VAI OUVIR DIÁLOGO NO MEIO DO COMBATE 343?

dito isso, campanha horrível uma das piores da franquia infelizmente, já o multiplayer foi um dos melhores e mais divertidos que já joguei.