[Falco's words help calm him. He's still terrified, of course, but being able to convince himself that Falco, at least, has some sort of plan is enough to get him to stop struggling. When Falco takes his hand, Luca squeezes back, both to reassure Falco that he's okay now (even though he really isn't, but he's at least better than he was a few moments ago) and to reassure himself.]

Okay...okay. I guess...lead the way.

[He decides to focus on just walking with Falco and going up the stairs.]

I don't know how you're staying so calm.