As the slight vibration passed, Vincent felt grateful for just how slight it had been; looking down at the puddle in front of him, a stronger tremor could have ended up very badly for him.

In any case, it seemed his idea had been on the mark; when he rose from his crouch, it was with a flask full of Acid Slime residue. 

"Not a bad haul," He mumbled to himself, as he let the acidic residue around the mouth slide down into the flask before closing it up. Tucking it in his case along with the four vials of Poison Slime, he headed for the second floor. He wasn't even at the top of the stairs when something- no, [i]someone[/i] seemed to fade into view near the top of them.

"Hey," came the voice from the familiar figure as Vincent finally reached the top. 

"Hi." Vincent replied with a nod to Senna. It seemed he hadn't been mistaken- the others were making their way into the Labyrinth again after all. "Did you feel that tremor just now?"