Survival shooter tutorial

hello guys, I just started to learn from survival shooter tutorial ( You can find it at learn > tutorials ).
So I downloaded assets but when I open "_Complete-Game" scenes it looks like:
I didn't change anything but the prefabs looks weird. What I suppose to do?

 

Not sure what's weird, hard to say by the photo and I've never done that project..
However, there are specific forums for the tutorials: https://forum.unity3d.com/threads/survival-shooter-q-a.338190/
If you have specific questions about it, you could post there