Take all the modern PS360 era clichés and put them all in one game, add some shaky ass camera, a non-functional cover system and general jank that ruin an otherwise really good gameplay, and you get Resident Evil 6.
Story is divided in 4 campaigns, and I'd consider only one of them good. Leon's is probably the best-paced campaign, followed by Jake's which is good but gets a lot worse in the last couple missions, but it's overall ok: Chris's campaign is total chaos, and the last campaign is an insult to gaming. They didn't even TRY to make Ada's campaign decent, it feels like something they added at the very last moment and the second before they closed development they added co-op. Every other campaign is conceived to be experienced as a co-op experience, just like the previous game, but Ada's is a SINGLE-PLAYER campaign in which the second player can't do anything except shooting. No interactions, no co-op segments, nothing. Player 1 (controlling Ada) decides when to keep going, Player 2 can't even do QTEs and spends half the time walking and looking at Ada: on top of that, this campaign is shorter than the others and doesn't really add anything to the game, except for Ada's signature weapon, the crossbow.
Escape sections suck, especially Chris's. They would work with tank controls, but the camera works against the player and you end up dying without knowing what hit you.
he most infuriating thing though has to be the action button. Imagine this: you're holding the run/action key, running somewhere, and you pass near an object you can jump on/off/over: even if it is BEHIND you, the game will make you interact with it. Why would I interact with something I'm not even looking at with the camera? Who thought it would be a good idea?
There are some good things about it: the dodge system is fun and satisfying, the melee combat with all the different stuns and finishers expands on what RE5 did, and it is fun when it works (ie: when you actually can stomp an enemy if you see the on-screen prompt, not whiff your attack because the game is jank), and Mercenaries is good, but I think overall RE5 is a far better and more polished game, with a consistent campaign and a less technical but more functional gameplay.

The game is good, but the card acquisition system and the aggressive mobile gaming monetization model are complete ass. Things have improved a bit since its first few months, but it's not enough. Not to mention the bots you find (especially in lower ranks), it's rare to face a real player. They do this so that you win more often and are compelled to keep playing instead of giving up and uninstalling the game. It's predatory and quite unethical, even if the gameplay is unique.
I tried to get into it again but I've given up.

Disaster of a game. Horrible framerate on PS3, questionable design choices, tanks suck ass and can't even boost because the booster management is ass and there is no classic boost, UI is ok but not intuitive, story has 2 or 3 good moments (the first train bit is memorable and mission 08 might be the best in the game overall) but is completely ruined by the mess on the screen and the framerate. Sometimes it's very hard to tell what's happening on screen, the game is too fast for being tactical and too janky to be entertaining. The OST is the best in the series imo but the game is not fun, at least solo. You have to be equipped for anything or a single hit makes you drop a lot of health if you don't have the big stats. This makes it that once you try a good build (heavy bipedal for big AP and overall defenses, especially TE) and find at least three weapons of three different damages you never touch the garage again. Melee weapons have no boost, kick is the way to go when it hits. Of course you have to overboost and hit enemies, but how can I when the framerate barely hits two digits?

- Mom, can we get some EN weapons?
- Honey, we have EN weapons at home!
- Mom what the fuck is wrong with you we have 3 and they all suck ass

Game is fun though. Not a fan of how the standard arena is 'cause I like the flatter ones, but it's good.

It's fun how what is for many the hardest game in the series can also be one of the easiest if you equip tank legs and the CR-WBW98LX. That thing is evil itself. Oh, you're a tank? No prob, 5 hits and you're dead. You're a lightweight? The moment you stop flying like a bee you get devastated. Two ACs? I don't care, get fucked. The arena? The only one in the series that doesn't require you to change build because it's completely doable with that cannon. Whoever put THAT THING in the game is an evil genius. The only times it doesn't work is when you need to complete objectives fast for the more complex routes AND against the "true" final boss (at least I couldn't make it work). Basically if tank legs are bad play hover or middleweight or whatever you want, if tank legs are ok for that mission equip the cannon and absolutely ANNIHILATE everything in your way.

Nexus was a mistake

The fact that I hate this game is a meme, I don't actually hate it. Ok maybe I do? Nah. It's just that Armored Core: Nexus is a game filled with ok or bad missions, everything sucks (tank legs are good though), the new controls are great but the arena is ass, the game is easy but sometimes frustrating for the wrong reasons (the bridge mission was conceived by a sadist). There's much to say on this game, the ending is one of the best in the series and the second disc starts great and finishes in a good way but the middle PP missions with the flying flowers could have stayed in that game and no one would have missed them.