Psycho

Psycho is an extremely potent injectable amphetamine composed of strange, unknown chemicals of military origin which comes with its own unique delivery system. It was designed at the orders of the U.S. Army's General Constantine Chase specifically for military use. It increased a soldier's damage resistance, and its dampening effect on higher brain functions made for tough—but uncontrollable-troops. This drug was very popular for human-wave assaults.

A dose of Psycho causes the user to go Berserk (as the Berserk Edge, but forgoing the Smarts check) for 2d10 minutes, or until there are no foes in sight (unlike the Berserk Edge, the user cannot make a Smarts check to voluntarily end their Berserk). Once the chem has worn off, the user is mentally exhausted, suffering -2 to Smarts and Smarts-based skills for 1d6 hours.