Everything in the scene is black
After I load scene by name or by file, everything in the scene is darkness, It looks like the near/far plane wrong in the scene camera.
Here is my scene view after open level100
Those are masks, you can select them and hide them by unchecking the checkbox to the left of the gameobject name textbox in the inspector.
i dont think so ,because the scene opend looks normally by my friend's computer, i think it maybe some settings problem.
here's the same level (level94) opend by my/friend computer

the lighing and detail looks wired from my computer,And I tried another computer, also the same problem
Well they are masks in level100 which you can hide. There's a few in your lebel94 screenshots as well. The masks are part of the map, that's not a bug with this project. In terms of the lighting, the editor has a scene lighting option (the light icon on the top left of the scene window) that may be causing it to look dark.