GrimTuesday: Based on the Google Translate, that polish review seems a bit spoilery, but from what I can get from it, there is no ending battle/resolution, it is just some of geralts choices thrown around.
EDIT: Game is 25-30 hours long for reviewer...
That's unfortunate. It's kind of short for a full priced RPG, esp. given that Drakensang is something like 80h and started off at $30...
My take on the series:
I liked TW1, but as much for the game as for the books as the game came out right around the time that the first English translated books were available in the US, but to me Drakensang is one of the best RPGs in years and much better as an RPG than TW series. i.e. TW story was better, unfortunately it lacks in actual RPG mechanics v. Drakensang.
That said TW is still better than the likes of Oblivious, Neverwinter Nights 1+2, etc.
I'd dithered about buying this game, but then I decided WTH after all I paid just about full price for Two Worlds 2 as well, which I felt lacked the charm of the first game. Cheezy faux old english dialog and campy voice acting of the first gave it some character while #2 just felt flat and tasteless. (And I disliked the removal of 1st person perspective as I've always detested modern single char RPGs that use TPP, but I guess that's because I don't care about "let's play dressup" partially and that I feel that FPP makes those games more engaging.)
Now off to install TW2 and see how this one turned out.