Killer in the school

"Make the call" you say. Jak jumps at the killer knocking him to the ground. A massive struggle ensures as Jak and the killer battle it out. You and Sam dash out of the room and head back up to the libriary. You turn around as you go. Jak and the killers fight to the death continues in the corridor. Jak gets on top of the killer and begins to punch and kick him. The killer screams in pain and now looks defeated. Jak prepares to deliver the final blow when suddenly the killer comes to life. He jumps up and grabs Jak by the neck and throws him against the wall. Jak is knocked out. The killer then dashs after you. You and Sam run up the nearest stairs. You both find the nearest classroom upstairs and dash inside. As soon as you lock the door the killer begins banging on it. Will you: