The camera far clip is 1000 and position is <0,0,-150>.
The backgrounds
sky Z = 0
ray Z= -5
tree z = -10
and that still doesn't explain why the ground is not rendering which is on the same z-Plane as the player and the falling objects. Nor the treetop which is just behind the HUD elements and in front of the falling objects.
I would say it might be an issue with the atlases but then none of them should work.
It looks like for some reason BackgroundSpriteCollectionData there were 2 Collection files for some reason
BackgroundSpriteCollectionData <- had no data
BackgroundSpriteCollectionData 1 <- had data
so I deleted the one with no data and renamed the other one (by removing the " 1"). However... it sadly had no effect on the situation.