Well if you've read the (currently) top reviews by Dark Sun Silke and Blackdragonbird, they cover the bulk of it very well. I enjoyed the game for the first few hours when you're not subjected to the Pay2Win mechanics at every turn. You get eased into that, then can't escape it. Get ready to have your immersion completely sodomised.
I wanted to like the game, really I did. I played the Neverwinter Nights games several times through, and have always been into D&D and Forgotten Realms, but if you're looking for that here, you won't find it. The developers are using the franchises for exposure, but aside from references, place names and deities who really serve no in-game purpose, the rest of it is just a bog-standard copy and paste mmo.
The game is riddled with bugs, which I can live with - it's pretty standard in mmo's as they're pretty complicated with all said and done, but Neverwinter does seem to have more than the norm.. really silly ones that shouldn't be there this long after release, but then the developers are too busy making things you can pay for. It's a plague just like Team Fortress 2 and the hats.. oh the hats...
Not that the game needs to be made easier.. so far in almost 100 hours of play, I've not died once, and not for lack of trying.
God knows I love to push the limits of what my characters can do, and regularly Leroy my cloth and leather wearers into the frey, but enemies just aren't a challenge, and bosses are just as easy but with larger health pools.
Here are some more specific points:
-Level design is ok if I'm generous. There are some areas that are nice enough, but certainly not inspired, and with the dire lack of graphical optimisation, I had to have the settings so low it looks like an mmo from 8 years ago just to have it not playing like a slideshow, and it's still less than 10 fps in the capital. My comp isn't great, but I can play most games at full settings. Any nice areas that might exist are lost to the battering the settings have taken.
-Quests are mini-hub based, and your standard tired fare. There are voiceovers for all of them as far as I can tell (well, in fairness I haven't paid alot of attention to it beyond the first couple of zones), which is nice, but you'll probably end up just grabbing them all and ignoring the 'story', as ultimately you're just sent off to kill a bunch of things or click on something on the ground. The quests feel like they were just dumped in to fill out the zones with something to do and aren't engaging. Grab a few, complete them, and gain a new level. The level cap is 60, and you can get to 20 in a few hours of speeding through quests without reading them.
-Music I can't really comment on, I have it turned off as I use a table mic for voicechat.
-Voiceovers are hit and miss for me. I've read several reviews which like them, perhaps because people tend to recognise them from other games, though personally I find that the accents aren't done too well. An example is Sergeant Knox, the main go-to guy for your level quests throughout the game. He'll start off sounding Scottish, and then kind of slip into English, then the American accent comes through before pulling it back to Scottish. Some of the voiceovers are native speakers, and they sound fine, but it breaks immersion for me when a voiceactor doesn't get it right. Having said that, there are a few noteable exceptions, and the voice acting in the Linkletter quest line was actually quite good considering the difficulty of that kind of emotiveness.
-Combat is reasonably action based, with dodging and timing your abilities for best effect, so positioning can be an advantage, but you can only slot a few abilities at any given time, so you'll spend most of your time feeling like there should be more to do as you'll be restricted to spamming the few you've chosen. For skills, feats and abilities, the descriptions often lack details, so you have to spend points on the skills/abilities to see if they're any good. Those wasted points can only be reassigned by spending real money on a respec, which will cost a few quid/bucks.
-Healing is a lost cause for so many reasons. If, like me, you tend to play a healing class, this is a game to avoid. Aside from making life a little easier in end-game content (of which there is a woeful lack!), there's just no need for a healer. At release the sole healing class (Divine Cleric) was fairly balanced I suppose, but got nerfed for whatever reason, and is by far the least played class. In PvP the Cleric is simply dead-weight unless the player has spent a few hundred dollars on gear. Heals are generally Heal-Over-Time (HoT), and somewhat lackluster. They're fine for PvE, but are lost to the rediculous burst damage of PvP.
-PvP is enjoyable ONLY when the teams are fair. On the rare occasion that both teams consist of players who haven't really spent much or anything on overpowered gear, you can enjoy it whether you win or lose and are satisfied in a balanced match. However, most games will just be utterly dominated by those with more money than sense. It simply does not matter how well you play, or how much better you are to your opponent, if they've paid out for gear you'll be the one face-down at the end of any fight. Not fun at all. You'll be repeating that scenario over and over, so bring spare lube. The fun matches are few and far between, and there's nothing enjoyable about a rogue unstealthing and killing you from full health in less than a second, even though you saw them stealth and were ready for them. Oh, and if you're riding one of the mounts you can get for in-game currency, you can be dismounted and land on your face if you take 3 hits of damage, or lose more than 10% of your health in a hit, while riding at +50% speed.. or you can spend £40 (about $65, though I think it's cheaper on the US Zen Market) for a mount at +110% that you can't be knocked from. Ahh the joys of Pay2Win. Gear has an overall score, and you could easily be matched with other players of similar scores, but then where would the incentive be to pay for all the best gear with real money if you couldn't dominate those who can't afford it? Noo, they'll never be adding that feature.
Utimately Perfect World are farming the players for every last penny they can suck out of them. You'll feel like cattle being herded into pens ready for them to milk money out of. When you step into the capital, PvP matches or higher level areas, get ready to feel like a homeless person in the rich part of town. Everywhere you look you can take in the beauty of what could be yours if only you had loads of money - and loads of money it is too. I deeply regret buying just £17 ($28) of Zen tokens and adding to the whole farce. I feel dirty and used, grasping the soiled sheets to my body to hide what little dignity I have left. You only start with 2 character slots, so I bought the Zen to get another 2 slots and have some left over for something else. Hmm, perhaps a 24 slot backpack to help with the constantly full packs that are deliberately full of enchantment stones etc to make you need more space. That'll be £10 ($16) please.
At least, I like to think they'd say please.