Pros:

Great map for continuing The Sacrifice chapter, and i think is impossible to complete this map if Bill is dead from the start. Good job for making him alive!

Nonstop hordes and tank every time make this map more harder and fun to complete it. well, It's fun for me.

Cons:

i do not see any usefullness from cave, it's just added a little story at the note in it. don't come in it because you just wasting your time.

Conclusion:

The first time play this map i killed Bill myself because Bill was dead at The Sacrifice chapter, but when i try to complete this map with just three survivor it's almost impossible how many time i tried. and again good job for making Bill alive, i appreciate it!

This are some little trick from me for completing this map:
1. kill witch with the auto-shotgun the first time you got yourself at the camp.
2. make sure you and other survivor get in the tent then use melee weapon at the entrance, this way you will keep yourself and other survivor unharmed.
3. build the barbed wired first before the hideway, it will make you not swarmed with hordes.
4. most important trick is patience.

i finished this map at Normal difficulty with just using four first aid kit and some pills.
overall, this map is great for someone who like challange.