I haven't even finished this adventure yet, and I'm so impressed that I wanted to write you some gushing fan mail. For anyone else reading this, I'll try to put serious spoilers under a spoiler tag, but the short version is "Go play it if you haven't!"
You guys have included so many little changes that make big differences. The sight of

Spoiler
a dwarf wearing make-up
was just hilarious, yet adorable. When I saw the Christmas tree in the hospital, I said to myself, "How did they do that," so I went closer.

Spoiler
The decorations are actually strings of garlic and pumpkins -- that's fabulous! And crates that have been reduced in size make surprisingly good presents under the tree.
Of course, the big surprise was

Spoiler
Diablo, and you guys did a fantastic job with him! Very impressive, I must say. And to whoever wrote the dialogue for that, I greatly enjoyed Geralt's unflappability in responding to Diablo's list of all his scary titles with "Geralt of Rivia, nice to meet you." I laughed out loud (which I do for delight, not just humor) when I saw Diablo and again at Geralt's answer. And lots of lovely fire and demon-from-hell atmosphere! Great job with that!
I was also glad to see that

Spoiler
you got a girlfriend for poor Kalkstein. He's a very nice man, if not terribly in touch with the way the world works, and the crazy math professor seems like a great match for him. I've always liked Kalkstein, so I'm glad he's got some company, if he wants it.
I didn't

Spoiler
pick up the red jewel after I killed Diablo; I'll have to restore from save once I've finished the adventure and see what terrible things happen if Geralt is foolish enough to take it.
Oh, and giving fisstech to a person with ... that name ... was also a great touch; the sort of thing that winks at those of us who've read a lot of SF but doesn't ruin the game for those who haven't.
I'm sure I've forgotten something I enjoyed, since there was so much of it, and as I say, I haven't finished yet, but I wanted to tell you what a great job I thought you all had done before I forgot too much.
Kudos!! :beer: