If one is to warrant good and evil points, then let it at least be for OPENLY evil and good acts.
Unless you are someone who truly knows all the weak spots of your target (i.e. you are assassin/rogue like), then a dagger in your hands is more to inflict a slow and painful death, and hence by your reasoning torture.
I have to disagree with this. Any one that has trained with a blade, knows the weak spots. It's not because its a broad sword that it can't be used to slash a throat in a swift pass, to move faster to an other opponent. Even longsword hit on a kidney would leave the opponent bleeding to death slowly. So it's not only assassins and rogues that would know that. The difference in the classes, skills and feats appart, is in the way it will be done. Fighter will go up front unless they need to be silent about it (which would be harder for them as they don't train in that way most of the time. While assassins and rogues will use the shadows and things to hide their approach to attack from the back or in ways that they wouldn't be seen.
Sure dark elves are evil and only deserve death. But to take a RL example, even the most fanatical Nazis in WWII, as evil as they were, should/would not be/have been murdered in cold blood... but judged for their crimes... or killed as soldiers on the battlefield. Murdering them in cold blood would just make/have made you as evil as them... or worse for you were or should have been good in the first place. The higher you are... the harder you fall. Hence the fact that those Neutral did not get the evil points.
The US solders that liberated Dachau summarily executed the SS officers they found there. General Patton pardoned them.
And evil act for a good reason (killing the Joker in cold blood, for example) is still an evil act... But the good act of saving those lives tends to balance it out.
The old lady is not going to start screaming out "SURFACER! SURFACER!" and get a posse of deadly assassains to MURDER you for helping her.