Piercing Strike (Punch attack)
Requirements: Unarmed 130%, Agility 7, Strength 5, Level 16
Damage: +10, armor piercing
Action Points: 8 -> 5
Critical chance: +40%
Piercing Kick (Kick attack)
Requirements: Unarmed 125%, Agility 8, Strength 6, Level 15
Damage: +12, armor piercing
Action Points: 9 -> 6
Critical chance: +50%
If you learn moves, you should be able use them without drugs. Unarmed weapons are good enough, but special moves should be usable too.