Armor vs. Internal Structure vs. Pilot Damage

Armor is breached when the Mecha is bloodied, i.e. when they reach half of their armor points in a particular location. Armor points are assigned as per the original source books used in the Mecha, for instance, the Battletech Technical Readout 3025 manual.

When bloodied in a particular location, critical hits (upon rolling a 20) are possible. Upon a critical hit, the damaged Mecha must roll a save or have a critical hit location damaged, for instance an actuator, weapon, or heat sink.

A pilot can be damaged when someone registers a head hit on his/her Mecha, or when his/her Mecha falls. At this point, the pilot must make a save ot be affected by weakness, stun, or some other effect.