Well, how about this (Both for TL, and AP):
-First condition is that you play on Impossible.
-Second no Retreating, no Loading once you go trough a scenario you don't like (eg. you lose too much army, so you load and play better next time.) and no losing ( you can lose army, but not all of it, so you wouldn't get the Defeat screen. )
-No kiting of course.
-You can use any Spells, Items and units you like.
Remember the second condition, it is most important. That way you get a fair game. Once you're dead, you have to start over. You'll have to choose your opponents wisely.
That's how I played both of them, and it was fun every time.
