"Range weapons" refers to weapons that are designed to be used from a distance, such as bows, guns, or other projectile-based weapons. It means you can attack or defend yourself from a distance without having to physically engage with your opponent.
Players should expect to either engage in close quarters combat or take out enemies with long ranged weapon attacks. (gamersinbeta.com)
I for one was complete rubbish with ranged weapons, so I instead focused on more agile suits, which I got used to and was able to navigate without taking much damage. (darkstation.com)
If you prefer to use ranged weapons, that's perfectly fine for this fight. (shacknews.com)