It's definitely much more polished than the first installment. I've played for around 40 hours and can probably count the bugs I've encountered so far on one hand.
Is it the same combat system as the first? No matter how hard I tried, it just wouldn't click for me. Ended up modding myself invincible in order to beat the game...
I'll do it again too if I need to because I love everything else about the game, but I'd prefer not to