Heh, amai
I would take off all of their nails, then cut off a finger, wait for them to heal a little, then cut off another until all toes and fingers are gone. Then, I'll use waterboarding, etc...After, that, I'll gouge out one eyeball, then rip out all the teeth, chop the tongue into tiny bits slowly...scratch up the face...pull out all the hair one by one...force the person to vomit out bile over and over again, cut off their limbs slowly and carefully...then I'll head onto psychological damage, I'll add in some good cop bad cop, some I'll let you go if you do this, some hero saving damsel in distress crap, until the mind is almost broken, then I'll take all the persons family and show them their family being tortured. At that point, they should be sufficiently broken, and then I'll just kill em.