go to place similar to picture 9, there will be a gray door in the corner at the end, open the hatch and jump down, where the pipes are, you can remove the wall, go there, boom! here's a screamer

from picture 3 were player spawn go the grey door hallway to kitchen and look above room number 2154 go right 2nd door and find small picture then press USE button to moved slide then get out the office room. Ones return to the kitchen jumpscares happened.
source from Gmod Explorer
https://www.youtube.com/watch?v=E-CuGnDhTUU at 20:45 unfortunately they missed jumpscare like above from comments

Respawn until you get to picture 3 from the intro, then go through the blue door behind the desk to the right in the image, walk through the hallway, go through the door marked "2154" and enter the room on the left. Press E/Use the small picture in the window, and go back the way you came :)

Jesus, this map did not need two jumpscares let alone one.

I know I'm late as ♥♥♥♥ to this discussion, but still. It would have been better if they had just stuck with the subtle spooky events like the random footsteps and the music on the intercom just playing out of nowhere.

引用自 Skerion：

Jesus, this map did not need two jumpscares let alone one.

I know I'm late as ♥♥♥♥ to this discussion, but still. It would have been better if they had just stuck with the subtle spooky events like the random footsteps and the music on the intercom just playing out of nowhere.

Right?? Scared the bajeezus out of me, haha.