Masochism

Achilles Heel: Masochism by Senator Cybus

In order to access his powers, the super being must inflict physical harm upon himself, the resultant pain serving to jump-start his extraordinary abilities. Worse, as he grows in experience, the character becomes inured to the pain and requires ever greater stimulus. The amount of damage necessary to activate his powers is 1D6 S.D.C./Hit Points x the character's experience level (1D6 at level one, 2D6 at level two, etc). The damage can be from several wounds, but the total amount of injury must be inflicted within fifteen seconds to be effective.
The pain activates all abilities simultaneously, for 1D4 minutes. After this time, the super being must harm himself again to remain empowered. Injury incurred during combat or through accidents will sustain the character's powers if a sufficient amount is inflicted.
The character does not have access to his powers when asleep (the amount of pain needed to keep them switched on would certainly wake him), so he will not benefit from the effects of a Healing Factor, Immunity to Disease/Poison or any other protective or regenerative ability. In this state, he is as vulnerable as any normal human being.