Simple categorized review:
Looks: The graphics haven't aged well (pixels), period. However, the art style is pretty nice and the spell animations are still quite beautiful. This game needs a remastered version! 5/10
Story: I don't expect much of a story from this kind of game and I don't receive it, this is definitely what you neither should want the game to give to you. There is a story and the characters are likeable, at least the devs tried and got you some funny dialogues, always a goal in mind and, admittedly, even twists. It's better than in Torchlight 2 for example. 5/10
Gameplay: Rather slow-paced hack'n'slay, compared to Diablo and Torchlight. The characters can be handled comfortably while sometimes the menus feel clumsy and outdated. Combat is fun, especially when you try out the many types of weapons and sorts of magic. The flow of the game is very good all in all, and with character progression and tons of loot you got to try out various play styles in a single play-through. 8/10
Character classes: Eight unique classes (two from the expansion) that feel and behave very distinctively. The war/combat-mage-hybrid is arguably the most fun character class in video game history when it comes to preset ones. Even then, there is a lot of customization to be done, skills to experiment with and tactics (especially in later new game plus). The balance has no flaws, in my experience, and you just wanna try out every character with every single play style. 10/10
Complexity: This game is deep, even deeper than your first play-throughs will make you think. New game plus holds a bunch of surprises later in the game and weapons and skill runes work together in a perfectly balanced and intriguing system, though the game is not hard to learn. You get into it and discover what it has to offer over time. Equip sets, customization, smart combining of equip and skills, varied enemies that need different approaches to be defeated, lots of secrets, skilling needs to be thought through thoroughly unless you wanna be smitten later in the game...
The game is as complex as one would expect from a good RPG with focus on looting and leveling. 10/10
World: The world is huge, diversified and has tons of secrets to show to an attentive adventurer. Monster types are far from being copy-paste and the art style is nice, as mentioned somewhere above. The problem is that it might become a repetitive experience in later play-throughs, without level-generation (- except from the highest difficulty mode that holds surprises, as I also said earlier on.) The settlements and castles deserve to be emphasised when I talk about the world, they are big, you can enter every building and they are full of stuff to do and see. Also, the world isn't vast at all. In Torchlight, for instance, I miss a huge map showing me the land that I shall care about and defend. 9/10
Quests: Several quests are humorous and most of them are nicely written. Unfortunately, there is much stuff to be fetched, quests just lead to new areas and actually earn you very juicy rewards. There's quite a lot of quests to do, you can just do them on the run and have a good grin here and there when you track down someone's rabbit or speak to the "more simple" folks. Sometimes you make decisions. 7/10 in a game of this genre.
Price: 10 $ or 2.50 $ on sale, pretty good deal.
Replayability: I bet you won't discover everything there is to see in the game during your first play-through, or in the second, or third. At least you will want to try out different character classes and/or play styles. Expect the game to let you grind monsters for a couple of minutes here and there in new game plus, that can be a pain in the ♥♥♥ if you're out for the best set equip. My 26 hours on Steam so far have been one play-through of the first campaign as an experienced player for nostalgic reasons (and trying to get the multiplayer to work), I could leave out a lot of stuff I didn't want to do for the tenth time. You can easily waste one hundred hours or more in this game - on one high-level character, that is. In later play-throughs, your equip and skills still really advance fast and give you the feel of becoming more and more powerful even after countless hours. 8/10
Multiplayer: Online is dead. You can get it to work on LAN, however, up to four players if I recall it correctly. It then works absolutely fine, but it's not comfortable to set up. 1/10
This game is the best of its genre, in my humble opinion, and a cult classic. You should play it. I will ignore my listing and give it a 10/10. Alright, there IS nostalgia involved. The metascore of 74 is reasonable. Give it some points up if you like this type of game and have fun in a game that is rather generic fantasy but excels by having great gameplay, complexity, character classes and an interesting open-world.