Department of nyromodal level 3 (Prey (2017))

There is nothing there. It's just the top part of the room with the piano, there's a huge ball that hangs just at the height of the 3rd level.

To get there, we have to open the door using the computer stall protection, which is closed.

Stall guard to open either with the skill of a hacker, either to search code, or using a bug:
from gpsource watered all the door all the way and throw a grenade on fissile resources under the door,
and then through the texture of the door to pass.