There is a lot of things people tend to forget such as constant pick-pocketing, taunts, even essentially dancing on the users grave after you get your quarry. These are CONSTANTs that must be done on most every kill. Also focus on the at least 4 to 5 star weapons and try to almost ALWAYS carry something like the assault rifle or at least have something to stun users after you for quick protection against hunters or to majorly weaken your quarry before you go in for the kill!

Best method to taunt your opponent and get away with it:
Get some kind of item to stun your opponent, taunt them, then kill them immediately. Don't forget to dance on their grave!

Utilize other weapons to weaken your opponents! Don't ever forget that you have other weapons. For example. you might want to use the stun gun to stun them temporarily and switch to a high fame weapon that might take a long time to kill the user to finish them off.

Decoys are your best friend! When in doubt about who might be hunting you, throw a decoy in an obscure location. One that might hit multiple rooms or is exceedingly challenging to get to. This gives you time to get your mark and see your hunter wondering aimlessely near your decoy to take them down, too!

Don't forget that camera from time to time for a few extra points here and there!

This about sums it up! I win 99% of the games I play other than with a few particular people, and you will start playing better if you follow these steps! I am sure I missed something and I may come back to this later to improve upon the guide, but that's highly doubtful.