Basically a good game in itself but a horrible RPG.
Gameplay is essentially hack and slash... the technical side of things basically only appears on Nightmare and then it's pretty much simply getting your characters out of your own AoE spells as friendly fire is off and micromanaging where your support character are as virtually every battle contains multiple waves of creatures that spawn on top of your weaker characters. Add in that the threat system appears to be either broken or require immense micromanagement and the "tactical" side of it is an exercise in frustration.
Graphics are more than adequate... it won't wow you but neither are there any real howlers in there (and I'm playing without any high-res mods or addons) with the only criticism being poor draw distances... far too often on a flat plane your minimap will show an enemy that doesn't appear on your game screen and leads to a "warp" effect where they suddenly appear and charge and over-stylised attacks; if a mage is doing its normal staff projectile attack is there really any need for them to twist round repeated like they're doing gun-cata? It's cool the first time but already grating by the 5th. Voice overs are generally solid... none really stick out as incredible but likewise none seem terrible either.
Talking of "warp" and waves of enemies one of my major criticisms is that virtually every quest plays out the same way. You're told to go somewhere, you march through, you take on a weak mob, as you defeat them a stronger mob immediately jumps down/abseils/rises from the ground/warps in, defeat them, go to the next room, repeat, repeat again, have a short cutscene with a minor boss, repeat once more etc etc. While the plot does a decent job of separating them out the gameplay itself gets pretty monotonous.
What really doesn't help is that they reuse environments. I'd heard of this issue before I played it and assumed it meant they reused some rooms and possibly you revisited places later in the game. Nope. Almost from the off you'll find that every cave, every warehouse and often every open land area are exactly the same with the only changes being that occasionally a route with be blocked/opened or a door closed off. If you complete all the side quests during the first chapter you'll have visited the same cave about 4 times and the same warehouse about 3... and it doesn't get better later on.
The plots fairly standard heroic fantasy faire but is well presented. The key issue is that it's hard to really get invested in either side of the main conflict (and you do basically have to choose) because each side is presented as being completely unlikeable with perhaps 2 sympathetic characters. There are outrageous plot holes throughout (made worse by the fact Bioware dealt with virtually the exact same plothole incredibly well in earlier games) but unlike say Fallout 3 they didn't completely pull me out of the game. Choices and consequences are limited but there are nice nods here and there to it. The plot does tick over nicely and its an improvement to have a more mundane start than the "Only you can save the world!" of the first game although it is guilty of trying to squeeze too much drama out of certain situations. I was worried after an intro that quickly included two "dramatic" deaths but it thankfully tones itself down. There are a couple of interesting characters, most manage to avoid being offensively bad although the majority are slightly over the top.
The proper boss fights are generally fantastic although there's a slight overuse of the "take set percentage of opponent's life, it disappears, mob appears, beat them, boss reappears, repeat" mechanic. The skills and talents are a little unbalanced, especially between passive and active and at times it can feel unfortunately like an MMORPG with you essentially just waiting to see which of your special abilities buttons has cooled down so you can spam attacks.
Overall it's a solid game. Play it as a pure RPG... or even as an Origins type RPG and you'll be incredibly disappointed, play it as hack and slash action RPG and it's pretty good. You'll get pretty good value from it although the lack of meaningful C+C does somewhat limit that. I wouldn't recommend it to someone who wasn't already interested but if you go in with eyes open and having read some of the criticisms you shouldn't find yourself regretting the choice.