Unconsciousness & Death

When a character reaches zero hit points, he or she is falls unconscious. When a character's hit point score reaches a negative number equal to their level or -10 (whichever is lower), the character dies. Thus, a 1st level character dies when he or she reaches -1 hit points, a 5th level character dies at -5 hit points, and a 20th level character dies at -10 hit points despite his level.