Missing a limb was not a fatal impediment to a mech.
In spaceborn combat, it was much more important to keep the flight system intact. As long as the mech was able to fly, it was often able to fight.
Yet as soon as the flight system mounted to the rear no longer worked, a mech could do little but drift in space on a ballistic course!
Of course, most spaceborn mechs possessed secondary thrusters and boosters that were situated elsewhere onto the frame.
While they represented weak points, they added a small but considerable amount of maneuvering capabilities to the mech. At the right times, they could mean the difference between life and death!
It was with the help of these secondary maneuvering systems that the Jeanne D'Arc managed to evade the Sword of Lydia generated by the Swordmaiden battle formation.
Yet the strange sword was still sharp enough to cut straight through two of its limbs, which Venerable Foster found completely absurd!
