TV Jumpscare

In the Normal version of the map, head to the Green House Upstairs bedroom, and on the dresser will be a TV that you can interact with to turn on. Doing so will spawn a red orb somewhere in the sky around either the Green or Yellow house.

Once you've spotted the red orb, shoot the antenna on top of the Green House until it is pointing in the direction of the red orb, triggering a distinct sound. You can now interact with the TV again, until it gets to the channel you see in the image below, which will cause the jumpscare, which we won't spoil.