Honourable Death
ok a bit of an explanation, you are a master martial artist, you are fighting against another master martial artist.
Kill him and honour him for his skills knowing that the encounter between you two has made you even stronger before and you respect him for it.
Or!
Spare his life so that he might come back even stronger, ensuring the rivarly between the both of you so that you both keep on increasing your martial skills til the end of your and his life.