burn!
you die faster and don't suffer XD
You kidnapped your biggest enemy (he killed your whole family, tried to assasinate you and stole all your money XD)
WOuld you rather:
1)Strangle him with your bare hands
2)Burn him
3)Drown him
4)Bury him alive
5)Eat him alive XD
6)Starve him to death
7)Cut him into little tiny pieces and let him bleed to death

Kill him, then sell all his organs on the black market XD
9)If the options aren't satisfying enough, type your own...
XD