I banged out Witdcher 2 all weekend, only just hit Chapter 2. Playing on Dark difficulty, the difficulty is definitely there - they basically amped up the enemy stats, so you die in a few hits. No big deal, as with most ARPGs, you can just roll around and pew pew pew fireballs at them and kite them out.
In Dark difficulty, they introduce a super good armor set that is only available on Dark, and there is one unique set per chapter. After picking up EVERYTHING i could, and scraping together the money and items, I made the set.
Turns out, whenever you unsheathe your sword, your screen turns all black and foggy - because youre supposed to be "cursed" - which is nullified when you have the whole set. In order to play Dark mode with this new gear, you have to suffer through this black haze. Whats worse is that all the Dark sets are Best in Slot for the game (at that point), so your only option is to nerf yourself so you don have to deal with a black haze.
As for the game, its aight, but TBH plays like any other eurojank ARPG I've come across on console - Risen, Arcania, Two Worlds, etc.
There doesnt really seem to be much consequence on your decisions. I can just as easily tell people to fuck off, be their bitch, and anything in between, the only repercussion are the rewards involved. I normally just go for anything that yields me more money as money is pretty strict in this game.
Theres a lot of mentions of the "Wild Hunt" for witcher 3, so it helps keep my interest.