I just finished DS2. I think overall it's superior to DS1, but the last couple of chapters are annoying and take out all the tension from the game.
The sheer number of upgraded enemies in tight quarters just makes for trial and error gameplay, and that gets tedious. And the
Spoiler
regenerator
can do one!
As for the final boss, it took me 3 attempts, and
Kimarhi, you were totally right. Upgraded seeker FTW. Though it was a bit of luck as well, I think, depends on what
Spoiler
the pack
are doing.