After Fallout 2, I did not expect another game as enjoyable as that to ever appear again. I am so glad that I was wrong.
I like how the game sticks to AP combat which really increases the amount of tactics available rather than just go out with the biggest guns. Even melee is viable in this game which is pretty amazing as this is the first game that I chose to use a melee character all the way to the end.
I also like the weapons customisation which makes many weapons usable according to my preferred playing style.