IF HALLWAY-when you flash your light on him, he starts running. You have about 3 seconds to close the door which stops him.
IF VENT- you will hear him moving trough the vents, close the vent door. If you see him in vent camera, close the vent door ASAP.
How do I stop Troonjak from ACKing ximself?
If you're a trans ally try flashing xim a few times
Flash xhim 3 times with your flashlight