OK I waited until the lakorn end to watch... and I watched everything in one day.
As far as each character, they played their part pretty well. As for the lakorn and storylines itself. I think is not so bad, since I like the mystery and creepy sense of the lakorn of the original ch.7 version more than the sweet ch.3 version. So this version is good in the sense of giving me the creepy feelings because that is how it should be, just as expected from the title of the lakorn. The storylines is not about the sweetness between the pranang, the storylines is about the mystery surrounding the castle, that's why is call "Prasart Mued (Dark Castle)" that why the neighbors are wary of peoples from prasart mued and they call the P'ek zombie LOL.
As far as Nat's acting, he isn't so bad, because the p'ek characters in here suppose to be stiff and lack emotion, which fit Nat's stiffness.
And the n'ek character, she not suppose to show much of emotion either because of her royalty upbringing and she suppose to have an arrogance in her that doesn't show much of emotion. So overall when it comes to their characters they play it well. It's just the lakorn is poorly done, they didn't excuted the storylines well and it seems rush. That is why the lakorn seems bad, but not the characters or bad acting, it's more like bad director and script writers of the lakorn itself.
If anyone saw the original ch.7 version, you will like this version. But if you saw ch.3 sweet version, then you might not like this new version. For me personally after watching ch.7 version and as good as ch.3 of Willy and Lalita is I don't like how they changed the mystery storylines into a sweet lakorn. But then to each his or her own taste. This version is not bad, just poorly done. Still better than some other lakorn that are out there.