When a Mech is successfully hit by an attack, reduce its Structure Points according to the damage of the weapon. For example, if a Scrapper Mech with 9 Structure Points is hit by a Red Laser which deals 3 damage, reduce its Structure Points to 6.

If a Mech is reduced to 0 Structure Points, roll on the Critical Damage Table to determine what happens to it. It can lose Systems or Modules, or even be destroyed. A Mech's Structure Points can only be reduced to 0 SP and can never go into negative values.

If your Mech is destroyed, your Pilot dies with it; unless they can escape. Mechs are usually installed with some form of escape mechanism which allows the Pilot to attempt to escape a Mech in the event it is destroyed. The standard type is the Escape Hatch System.

Mechs are behemoth armoured structures. If a Mech is hit by any weapon that lists HP damage in its profile rather than SP damage, such as a Pistol or Rifle, it takes half that damage.

Source: Salvage Union Workshop Manual, p. 239