Looks like a bug (The Witcher 2: Assassins of Kings)

Started for the second witch. The point is, with Zoltan chehlum to Truly to negotiate on the way chop knackery with the spiders, we meet two elves, kill gravoglas. After all this includes the cut-scene, the archers Truly surround us, the latest comes to us, makes a nod to your taels and we fly the arrow. The end of the game...
I did something wrong. or is it a trivial bug?