I'm not a Psycho Invader

You've seized a university! The roof is the only way out.. Every floor is full of obstacles. Each hostage has a role - useful, dangerous, or worthless for you. Identify the roles to understand what to do with each of them. Interrogate, search, or kill. Study their answers and items. The more you learn, the more obvious the role. Hostages may also hide useful items that can save you time or let you take a risk. The right item or kill can clear the way. Everything costs time, and panic raises the price. Time is currency. Find the right hostages, break through the obstacles, and reach the helicopter before time runs out!