Clearly, the answer was enchanted guns.

"I'm all right. Their hiding defense is very effective, though," Celestia said, dropping back down to the ground. She took note of Sora's weapon, comparing it to the others she'd seen since coming here, but now wasn't the time to mention it. "You're both skilled at combat; they will have to muster a more dangerous force than the one we just fought, I think, to endanger us."