How do you repair armor?

Afterwards, an influential group of Reploids begin stirring trouble by spreading rumors about sightings of a mysterious phenomena called Nightmares, which seem to be centered around Zero. Gate's right-hand man, Isoc, gives a speech telling the other Reploids that the Zero Nightmare is pure evil and causing a great deal of chaos throughout the world. He opts to build a Reploid Utopia (akin to General in X4), to protect them from the Nightmare while Gate, the leader of the new Reploid organization, sends eight of his researchers to investigate the eight critical areas where the Nightmares were sighted. This in turn piques X's curiousity, as he doesn't trust Gate or his researchers, and goes to investigate the eight areas himself (there also seems to be a connection between Gate and Alia that Alia is not willing to share). However, the effects of the Nightmare have altered not only the physical state of the areas (some areas becoming completely revamped or plagues with strong winds), but also X's perception of them (shifting lights making it hard to see, or showers of psychosomatic acid rain).