Originally Posted by Kelb_Panthera
As for assassins and honor, that goes to motivation and the subjective concept of honor. If serving your master is more honorable than a sneak-attack kill is dishonorable, then you're following a lawful dictate while breaking a less important one, the net value being an overall lawful action. In otherwords, without a clear definition of honor to go by, most anything can be specc'ed as honorable/dishonorable. It's kinda like good and evil in the moral sense that way.
It seems clear to me that slaying someone while giving them no opportunity to defend themselves is an unacceptible action to anything resembling a code of honor. Obedience to an authority figure is rooted in Law but not in Honor, so obeying a dishonorable order is something I would consider to be within the bounds of Lawful Neutral but not Lawful Good, as Lawful Good is not just "Law + Good" but "Law as the definition of Good and vice versa".