To name a few:
- Combat feels very dynamic for a turn-based game
- Voice acting is phenomenal
- Replayability value is beyond limits, I have more than 1000 hours in this game since the beginning of the EA
- The art direction is top notch
- Music is always on point
- The world interactivity this game offers is unmatched by any other CRPG, in my opinion
- The game doesn't shy away from depicting violence where necessary
- The amount of class/race specific dialogue lines is huge and lets you truly live your character
- Level design is solid, there are multiple ways of handling every situation yet it feels more like a sandbox, rather than having forced solutions
