I gave up on this game 2 or 3 years ago. I was 14 hours in, I'd already completed half the story missions, and I wasn't having fun.
Then a month or so ago I was thinking about how the hubris of the game is they thought they could just pin it all on the Nemesis system, and I thought maybe I'd write something about that, but I should play the game again just to remind myself what I didn't like about it. So I booted it up and within an hour had said "Woah, I didn't know it could do that" like 3 times.
Something clicked that hadn't clicked before, and I played all the way through the Sauron/Celebrimbor fight. I was even fully committed to seeing through the Shadow Wars, but for whatever reason a took a break for a couple weeks and when I came back to it...whatever had clicked had unclicked, and all I was feeling was how incredibly frustrating this game is to play.
So, yes, the Nemesis system is cool. When I'm walking through a camp and poison a grog barrel and then suddenly an orc Captain shows up and is critiquing my poisoning technique before attacking me, like, yeah, that's pretty amazing emergent storytelling.
But when I finally killed a Captain who I had killed previously but then he came back from the dead and then killed me like three times, eventually becoming an Overlord, and then when I finally defeat him I shame him instead of killing him because it's more narratively satisfying and then when he ambushes me I'm initially like "I'm going to recruit him" but then it takes like 10 minutes to break him and so I change my mind and decide to kill him but then it takes another 20 minutes to kill him (this dude was so fucking annoying, he had a shield, he had vault breaker, he was immune to basically every way I could damage him, and HE COULD HEAL)—when I finally killed him...I was just mad. Everything up until that last fight was narratively satisfying, that was great, but that last fight was just frustrating, and it was frustrating because the game's combat mechanics are horribly balanced.
A lot of captains, especially at higher levels, are essentially immune to your basic attack, either because they have a shield or can dodge. If they have Vault Breaker, you can't even use your vault to freeze them. You could attack from stealth then try to run away and regain stealth, but aside from being tedious that's also not guaranteed to work, as they may be immune to stealth, or they may be able to heal, they may accomplish their objective while you're hiding (if you're in a Nemesis mission), or they may just run away. You could attack from range, but you only have a limited number of arrows so you'll need be constantly trying to find ammo—also, they could be immune to ranged attacks. You could summon a beast, but once they kill your beast (which usually happens pretty quickly) it's on a cooldown—also they could be immune to beast damage. You could summon allies, but once they kill your allies, they're on a cooldown. You could summon a bodyguard, but then you risk losing that asset permanently. You could use Might skills, but then you need to be able to build up Might, which is going to be difficult if you can't hit them with your attacks. You could use Elven Rage, but Wrath builds up so slowly you're only going to be able to use that once—and they might be immune to ranged damage.
Now, it is unlikely that a Captain will have all possible immunities. But even 1 of them can be annoying, and 2+ sucks the life out of combat. And while combat is fun and dynamic when you're just mowing down mobs, as soon as you throw a Captain into the mix suddenly you're trying to be very intentional and precise with a combat system that laughs in the face of those concepts. The number of times I have dodged an enemy attack only to find myself vaulting over and then freezing one of my own allies is truly innumerable. Likewise the number of times I've used an Execution, or Domination, or Shadow Kill on the wrong orc. Much of why I gave up on the Shadow Wars is because in a siege you will frequently find yourself in a situation where there are 1-3 enemy Captains and 3-5 of your own Captains, plus a bunch of grunts from both sides, all in tiny area, and navigating that situation is basically impossible. At some point you kind of just want to sit back and let the game play itself, except that's incredibly boring and also would probably result in you losing because your allies are kind of stupid.
On the other hand, it might surprise people (not least of all myself) that I don't actually have a huge problem with the game's writing. I think it's cool to see people play around in Tolkien's world in a way that is completely unattached to canon but is clearly doing something intentional. In this case it's kind of goofy, but it's still interesting. And sure, sexy Shelob is an incredibly obvious (and kinda out-of-left-field) attempt to add some sexuality to a famously chaste setting, but she's also a surprisingly compelling character. As is Carnán, for that matter. Hell, there are more women in this game than in most Middle-earth-related works, and they're all decent characters (although I remember Gondor lady as being kind of annoying but I could be completely misremembering, I'd already finished her storyline before I stopped playing the game the first time so I never interacted with her while I was finishing it up). Isildur being a Nazgûl is patently absurd, but it leads to a great character moment and ends up connecting Talion to his most obvious canonical analogue, Aragorn, in a way that the game wisely chooses not to draw attention to but it is a nice layer to have nonetheless. And I think their take on Celebrimbor is actually interesting and not even out of line with Tolkien's ideas.
So that's what it comes down to—the Nemesis system is cool, the playing-with-a-LOTR-Lego-set-without-reading-the-instructions approach to writing is actually pretty fun, but minute-to-minute, on a purely mechanical level, this game is frequently unpleasant to interact with, with everything from traversal to mount controls to combat feeling awkward, imprecise, and poorly balanced, actively impeding both my success and enjoyment.
p.s. Making Brûz the Overlord was such an obvious choice, it was annoying and confusing when the game wouldn't let me do that. The fact that it was just to set up a betrayal made it that much worse. Like, you're so proud of your emergent storytelling system, but you still have to script this one thing and not give the player a choice in the matter, even though this exact same situation could have cropped up organically within the Nemesis system and felt much more satisfying?