In hero arenas, you attack click on the enemy and spam all spells you have. When your low on health, you run away.
You can't really compare that to what a moderate AI in Elimination would be. And it's deffinately not worth the work it would be; it wouldn't be fun playing against bots. Its a multiplayer map, I'm not adapting it for people without internet :)
edit: Oops posted without seeing page 2 :)