My friends and I were playing a custom game the other day, and we all decided to play Unclean Beast. Needless to say, every time we saw an enemy demigod we just combined spit and they were pretty much dead unless they happened to get a teleport off or use a potion. Eventually, we managed to basically corner the enemy in their base, killing them as they came with a volley of spit for each demigod, and retreating when they came close. Eventually, they all just quit, we were all level 11 and they had two level 5s and one level 6.
We tried this against, you know, good players who knew how to stun and such, but using focus-fire we were able to kill them pretty easily, and they couldn't hide from spit forever.