Old fashioned, but still good
Despite the generally lackluster reviews, I actually enjoyed my time with this game (the main story at least). It is old fashioned with the grid-based movement, which takes a little re-adjusting, but it brings back memories of the old M&M and Bard's Tale games.
The combat is decent but there are times when your progress slows and you end up having to creep around looking for mobs you can defeat right now in order to level up and take on those mobs that are kicking your butt. There is a good selection of classes and races to chose from, but they aren't as well balanced as they could be. There are definitely some party builds that will make you life easier, and some that will make it much harder.
The DLC on the other hand, is terrible. At the beginning of the DLC you will open a door and...insta-death. Not, a really hard fight insta-death, an actually "sorry game over" insta-death that you can't do anything about. So you'll reload and decide not to open that door. You'll see a lever and think "I'll try that lever", guess what? Insta-death. So you try again, walk down a corridor and come to a junction, which way to go? Guess what? One way is insta-death. This goes on for the first section of the DLC getting repeatedly killed without warning, for no good reason. I don't know who thought that would be fun?
Once you are out of that, I hope you built a "might" rather than a "magic' based party because all your weapons have been taken away and all you get is low level stuff.
So play the main game, skip the DLC.