I'd pull out my Frank Beltrame black stiletto and with the simple press of a button have four inches of sharpened steel to take care of business. The Romans figured out 2 inches of steel was the minimum needed to kill a man, but I prefer four.
Anywhere to the face or neck and he will definitely wish he had chosen another line of work.
" Of every One-Hundred men, Ten shouldn't even be there, Eighty are nothing but targets, Nine are real fighters... We are lucky to have them...They make the battle. Ah, but the One, One of them is a Warrior... and He will bring the others back."
- Heraclitus (circa 500 BC)