It has a huge scratch at the chest along with small one, and lacks arms, that are replaced by spikes.
He starts at Storage Room. When it changes position at this room, he will be close to camera, staring. Then he cant be seen in any of cameras, but soft walking can be heard when it moves. When the player thinks he is at left door, listen for breathing. If you hear breathing, immediately close the door and wait 5 seconds to make him leave. When the player doesnt go to the door, or takes too long for listening, closes for too short amout of time or hides at the desk, He will jumpscare, causing game over.