Shocking

Shocking weapons can incapacitate their opponents with a powerful surge of energy or other non-lethal means.
A target that takes at least 1 point of damage from a Shocking weapon (after Armour and Toughness bonus) must make a Challenging (+0) Toughness test. If he fails, he suffers 1 level of Fatigue and is Stunned for a number of rounds equal to half of his degrees of failure (rounding up).