The only way to win either on an online or skirmish game is to destroy the enemy temple. Does this mean that there is no "good" way to destroy a temple, thereby defeating the enemy?
Erm, get your creature to get rid off the temple, that way he takes the alignment hit and not you?
Or one of mine and my friends tricks, set a tree on fire and stick it next to the temple, oddly enough it would destroy the temple with no alignment penalty.
I heard on Kayssplace somewhere it's easier to just set a rock on fire and do that, that way you just need to keep casting fire on it, instead of wasting trees every time.
I use the method of taking the largest rock I can pick up, dropping it by the enemy, and quickly breaking it up into tiny chunks. A couple of fireballs later, and the pile can't be put out, won't stop burning, is hard to move, and doesn't impact alignment. (I'm playing as a god god for the first time, and I just got to land four. Leths likes shields and water, so I had to figure out something else.)