Last night I started playing a mobile game on my tablet that's similar to Pandemic or Plague Inc, except that instead of creating a disease to destroy the entire human race, you only kill one person at a time. I started out with a person who is overweight, a couch potato, a junk food addict and a smoker, so he was definitely for beginners, but then I unlocked a patient who was a hypochondriac and is more resistant to physical disease but his mental health is fragile, and then I unlocked then a patient who is young, healthy, and active.
I killed off the healthy patient by making the patient "unlucky", and the doctors as incompetent as possible - they started using ineffective placebos on him, then I upgraded it to poisonous stuff like expired medicine, made them give him the wrong diagnosis, and then when he was in emergency I had the nurses AND doctors go on strike and one of the surgeons basically went spastic with their scalpel.
Muhahahha.
You can even make up a name for your victim. One name I used was General Sneezecough.