The Attacker starts the fight with a Pressure Gauge value of 5.
Landing Basic Attacks increases the value by 1 for each hit.
Blocking an attack, or activating a Special Attack decreases the value by 1.
If the value reaches 0, the Attacker's Power is drained to 0.
If the value reaches 10, the Attacker receives a burst of direct energy damage equal to 300% of the Defender's Attack.
If either of these are triggered, the Pressure Gauge value is reset to 5.