Looks like we are missing a scene and some assets. Lesson 7 doesn't have all the sprites that you are showing off at first in 2D Standard Assets, and has the L8 scene whereas the Lesson 8 folder has no scene.
If a user goes to the Assets tab on the toolbar, then chooses "Import Package" and then "2D", it will try to import all the 2D assets shown in the first minute or two of the video. Unselect all the items and choose only the sprites needed as was shown in the video.
