It is vitally important, when it become time to humiliate someone, to do it properly. You need to crush their soul. Obliterate all semblances of hope. Remove any chance, no matter how slim, that they will recover.
When it comes time to issue the killing blow or statement, it is best done in such a way that everything that they thought was their best chance for recognition or salvation, is dragged through the proverbial mud. This will signify to the worthless peon that no matter how hard they work, how valuable they thought they were, despite their best efforts, they are still worthless. Their net contribution value is negative.
After doing this, your would-be opponent has nothing to stand on. They will have nothing to attack you with for you will have removed everything. If done properly, they will never recover and will never be able to challenge you again. I
f you are going to all the effort required to humiliate someone, go all the way. It only requires a little extra effort on your part, and oh so worth it when you see that special look on their face when they realize that there is no washing that mud off their face!