At the 34:35 mark, Katya is moving through the cave and the rocks that she steps on are too flexible to be real rocks.
The computer in Hopes dorm room has no power or any cables coming out of the back. Also the monitor does not have a power cable.
Around 33:06 Piper mentions that there is "still a demon on the loose". The demon in question is a female but she continues with saying "the longer he is", instead of "she".