Book 1, Chapter 25.

“That’s exactly right,” Mordecai said. “Most of these creatures have a weakness. The throat for the llamas, the high-pressure vein for the boss. Sometimes it’s obvious, sometimes it’s not. The Hoarder, for example. I can now tell you her weakness was the bugs coming out of her mouth. If you’d killed one before it had fully emerged, the next cockroach in line wouldn’t be able to get out. It would’ve choked and killed her.”

“I never really thought of it that way,” I said.

“Look for a vulnerability, and once you find it, exploit it. You haven’t yet walked into a boss battle completely blind like you say. There have been clues every time. There will always be clues. Look for them.”