One step ahead, three steps behind.
Let's start with the plot. Nothing original... You are a farmer, quick tutorial (pretty boring), everything is in fire. Like in 75% of RPG's. Then you are sent on a quest (like in 99,5% RPG's). Then you meet ,,exciting'' people, a dwarf-monk... And that's pretty much it. Then there is standard ,,go there, speak with XXX/kill YYY/ other boring stuff, return for reward''. But that's not that bad.
First thing you'll notice about this game is that... It's ugly. Holy crap, this game requires PC as good as Oblivion, runs slower and is uglier than TESIV? What they have done to the engine? NwN 1 with all settings turned up requires slower PC, looks as good or even better than NwN 2 and runs smoother.
The only good thing so far is the music. As in all NwN games, it's great. But a lot of it is ripped off the first game...
Also battle mechanism didn't change - roll for who attacks first, attack, counterattack and so on. Few things changed from NwN, but everything is pretty straightforward. You'll have no problems adapting to new things, but if you are a first-timer... Read the instruction, it's written pretty well and should help you.
One thing I don't understand is the interface. What the hell? Where is bar for skills? Wth is ,,quick spell''? WHY DID YOU COMPLICATE IT SO MUCH?! Interface was perfect in nwn 1! Are you mad, people? I hope they'll allow us some day to use the old interface...
Oh, and one thing that really bothers me. They promised us, Bard class, that we will no longer be so useless in NwN 2. Then why, after 2 years of experience at arenas and persistent world I had problems at the first fight after tutorial? Good thing - songs are passive and we don't have to rest every few seconds. Bad thing... Without at least a healer and a tank, you have little chances against monsters. You MUST cross-class to survive by yourself.
So, if you like RPG's and DnD, don't buy this game. Buy NwN 1 + add-ons, it's cheaper and you get much more fun. If not for great music and sound effects, this would get at most 2,5...