Call of Cthulhu

Chases

Damage

Minor: (1D3) a person could survive numerous occurrences of this level of damage.
Moderate: (1D6) might cause a major wound; it would take a few such attacks to kill.
Severe: (1D10) likely to cause a major wound. One or two occurrences would render a person unconscious or dead.
Deadly: (2D10) the average person has a 50% chance of dying.
Terminal: (4D10) outright death is likely.
Splat: (8D10) outright death almost certain.

Asphyxiation and drowning: a CON roll should be made each round; once a CON roll is failed, damage is sustained each round thereafter until death or until the victim is able to breathe. If the character is in a state of physical exertion, a Hard success is required on the CON roll. Death occurs at 0 hit points (ignore the Major Wound rule).

Poisons: an Extreme CON roll will halve the damage from poisons. Poisons may cause a variety of additional symptoms including: stomach pains, vomiting, diarrhea, chills, sweats, cramps, jaundice, altered heart rate, impaired vision, convulsions, unconsciousness, and paralysis.

Sanity

Bout of Madness