The second phase literally gave me goosebumps! Nice work there with the whispering and thunder storm. You achieved a super cool look in the short time available and everything matches very well. My biggest complain is about balancing: In the second part sheep move way faster, have more health and spawn faster all at once, that is a big ramp up in difficulty in comparison to the first part. Still it was more motivating than frustrating but a smoother difficulty curve would have resulted in a better and more fun experience. Another thing worth tweaking is the camera distance. I played on PC and when the shit hit the fan and I where chasing many very fast sheep I only focused on the sheep icons on the border of the screen rather than the actual visuals. Otherwise the time I have to react is too short. This is especially unfortunate because your game looks so nice. I can imagine though, that the current camera setup is better for mobile.
All in all, a perfectly scoped and well executed project that would be perfect with a little bit more tweaking.