I played focusing on corruption, I ended up with 23 because I didn't kill Klaus' partner, (laziness), I was surprised when I had the option to kill Cristine and Demi, honestly it's not worth it, you get stronger, but these points most likely won't make a difference compared to being nice, there was the scene with the corpse in the prison and the ones at the party where you follow the feeling, however i feel bad even though it's a game, i mean Demi had a fan club of ours, having only love and affection and you kill him cruelly, for me it makes no sense to be like others monsters