Ahem. There's some kind of huge alien monster glaring at us from inside, and I assume we need to get past him to get to the vault. So the plan is: you fight him while I stand over here and read through some more books for research. Come on! What are you waiting for?
Okay, soooo I might have been wrong about how tough he looked, but at least you beat him! He's even "given" you the key to that vault door! Between you and me though, this thing doesn't look very trustworthy, so let's be wary of him. Oh he's glaring at me too, maybe he heard what I said? Everyone knows whispering is secret-talk! How rude, listening in on our conversation!