Prompto only hears the lid slam into the demon, and he only hears it screech in distress - or maybe just annoyance, who would like being hit by a lid like that. Whatever's going on, he can't see at the moment, but he crawls away when he feels the demon lift off of him even the tiniest fraction.

The good news is, he breaks free, the terror demon more focused on the mortal yelling and charging at him. Bad news is, his weapons went flying who knows where when he got hit, so he's left with nothing but his fists. "Crap. Crap crap crap, where did...?"

He finds one in the distance, and makes a run to grab it.