The end game thing only takes like an extra 4-6 hours of gameplay.
So far, I'm enjoying it but it's not a game I could see myself binging on.It's great, but after awhile, you can get tired of the ambushes, the orcs and the grind.
The Nemesis system is improved, but it really works wonders on Nemesis difficulty. Like you'll encounter a guy who becomes enraged by EVERYTHING and will end up adapting to EVERYTHING you throw at him.
I would also suggest kind of avoiding the fight pits if you can. They're great when they work, but I've had Orcs who could have easily won if they didn't stand their dazed and getting their head bashed in nonstop.
turn off some of the hud too, especially all hud features tied to the orcs. It makes the game a lot more of a cinematic experience, which is what this game also does well for me. ---