HOO BOY. This whole place is going to give Prompto the heebie-jeebies and crank up his anxiety because the kind of tech and architecture evokes some not-so-pleasant memories for him. He's going to be kinda high-key stressed and channeling a lot of his energy into a few different things.

First, he'll be investigating the bedrooms and the pods, because if they came out of them then it's possible that there are still people in them waiting to wake up. He doesn't want to leave anyone behind. Aside from that, he'll try to literally chase down the spooky sound with the aid of his Astoria powers. Apologies in advanced if he runs into you, literally. Finally, he'll want to help with locked doors — he doesn't quite have the skill to pick locks (he doesn't have that skill tree in his game), but he is technologically inclined so he can provide some support in that regard.

Overall, he just wants to get the hell out of here as soon as they can. Whatever he can do to expedite the process is where he will spend his time!