First off, I overall really enjoyed the game and finished it with much pleasure.
The good:
The traversal is amazing, it's really smooth and fun to swing around the city, web-zipping from point to point.
The open world is what makes everything in this game fun. There's traversal points everywhere, there's enough fast-travel options so that it's not tedious to get somewhere.
There's small collectibles hidden throughout the entire world, never too far away, but far away enough to have to divert slightly from your course to go get them.

The combat is very flashy, and at first really fun. There's 3 skill trees to unlock giving you better combat options and new moves.
However, this is all pretty superficial, and the combat wears out its welcome eventually, becoming tedious.
At first, enemies are slowly introduced, at a good pace, to introduce you to the combat system.
This is very well done. However, it doesn't get better. After the shield enemy gets introduced, only a couple of other enemies get added who play all similarly, with only a couple having some unique mechanic.
It also doesn't help that the other enemy factions you encounter all have the same enemies, but just stronger and tankier.
This makes the end-game combat encounters really tedious, since it's the same enemy you have been fighting all game, but he's wearing a different costume, is immune to your web attacks, does far more damage and is a lot tankier.

Most of the boss fights in this game are also pretty lackluster. They're cinematic for sure, but the gameplay is very scripted. They often go "Dodge this attack 3x times and then press triangle", which gets really repetitive.

The writing, overall, is okay. It has its peaks (the ending cutscenes are the best of the entire game), and it has its down (A lot of Peter's quips and conversations make no sense are often lame as hell).

For me, the biggest downside of this game is the side quests and side content.
The backpacks and landmarks are really amazing. They encourage you to explore the world and the traversal (as stated earlier) is amazing.
The research stations are a mixed bag. A lot of them are very similar, making them feel copy-pasted, but there's not that many of them, making it okay.
The Fisk construction sites were good, a nice little combat challenge. The Demon lairs were the exact same, so they were a bit repetitive. The Sable Camps and Prisoner Camps are the worst. This is truly just copy-pasted content to give you something to do with little to no thought, fighting the same enemies over, and over, and over and over again.
Late in the game, you also get introduced to the Taskmaster challenges, which are also very repetitive and also feel copy-pasted, making them really more of a tedious to-do list than entertaining content.

The side-missions are a mixed bag, some of them are amazing (Tombstone being some of the most fun I had in the entire game), and some of them are downright atrocious (the corrupted student missions).

All in all, this review sounds negative, but I did finish the game, and I really enjoyed the game and would highly recommend it.
It is from 2018, so obviously a lot of gameplay mechanics aged, and a lot of them aged poorly, but for its time it was amazing, and it's mostly held up pretty well

Uncharted 4 has the best gameplay of the entire series.
The parkour is so smooth that I didn't mind a single second of it.
The level design is really good and flows extremely well into the parkour, making both seem fresh and exciting in each level.
The atmosphere and levels on their own are beautiful with small details that add so, so, so much to the immersion of the game.
The story is great, but having played God of War: Ragnarok recently, it pales in comparison.
That is not too undermine this game: In 2016, this story was amazing and unheard of, having such a good story in a major AAA game. Uncharted 4 walked so that God Of War: Ragnarok could run, and the story does hold up.

Almost every mini-game in this game is a blast. The art is absolutely stunning. The dynamic between May and Cody is really well written and truly evolves as their relationship changes.
Even the book, Hakim, somehow gets bearable over time, although he is just straight up annoying at first.
The gameplay is amazing. I don't know how the game designers managed to make so many different types of game in one game, there's a dungeon crawler, a racing game, a fighting game, a dogfighting game, a shoot em up, and the list goes on.
This game is a gem, and truly worthy of the price tag and a perfect rating

This game is incredibly hard, but oh so satisfying, especially when you figure out how to reliably block and dodge attacks and how to counter attack.
The boss fights are cool (except the old lady one, it's a weird drop in difficulty), but there are a TON of severe difficulty spikes (3rd boss fight and final boss fight), and it gets annoying having to do the same sequences over, and over, and over, and over again to get to the boss to get beaten quite quickly.
A stake of marika like in ER would not have been a bad idea