LOUD WARNING mechanic: A-0234 will appear in the middle of the current room, and stay there for 3.3 seconds. After 3.3 seconds, it will rush to the earliest room and fake despawn. Once you open the next door, it will rebound back at extreme speeds. Once it gets to the current room, it will break every locker inside of the current room, then it will return to the earliest room where it will despawn.
update: new spawn sound audio is quieter update 2: new design