Below is our gameplay walkthrough that will help you beat Angry Birds Epic Mouth Pool. This is now an incredible ten-wave, and so our video is over 14 minutes long to show it all. But the general strategy is pretty straightforward. In each round, the big undead pig is likely impossible to knock out and simply runs away, so ignore him each time. In later rounds, avoid knocking out Kobolds and zombies too quickly, since you must wait for the big pig to flee.
Note: Prior to v1.0.8 and the global release, completing this level retrieved the Red key! Now, the Red key is obtained at the end of the first Chronicle Cave.