Kratos helps in his own personal way. That just so happens to involve murder, mayhem, and genocide. Look! He's helping!
I'll admit that it did take a minute for me to remember exactly what they were talking about here. And that did seem kinda... cruel. Though, I think killing the guy for the bow that he was gonna give Kratos for saving him was just a little bit worse in my mind. They could have easily let Kraotos save the guy, have him attempt to betray him, and had Kratos kill him in self defense. It just didn't sit right with me to kill him so mercilessly.
And before anyone bring up the guy in the cage that he burned alive in the first game, that was pretty obviously a case of he had no choice. The door was set up to do that. This was different.
I still enjoyed the game, though. Just saying that there were a few moments that didn't seem quite right to me.