Kill with one blow,help solve the problem (The Witcher 2: Assassins of Kings)

Decided to go again the game(save transferred from the first part to download from this site ),already in the prologue I met this problem (so to call it ) in General, what is the sword didn't take,kill with the first blow, it on dark difficulty ,the damage of the sword shown 10-17 for example, in logs writes 107,help to understand