[atlatea]

There are 2 major ways, one is map kiting, the other is no map kiting.

With map kiting, just kite all the way to elon/nameless. Pick all leadership, altars, etc. And do quests that doesn't require fighting. From this point, it is up to you (which unit/artifacts/spells/etc you want to use), no loss impossible should be piece of cake.

The other one, no map kiting, this one is harder. Though the hardest part is the first four island (debir, scarlet, bolo, rusty). After you finish those four islands, you arrive at verona, from this point, things are much much easier, and it is up to you.

But i'd give you the easiest way to pass the four island without map kiting. As for unit setup and spells to use, try looking on other threads, i believe many peoples already post their advice.

But the main goal for easiest way to pass the first four islands is getting call of colosus scroll by the time you arrive at scarlet or if that is not possible, by the time you arrive at bolo. Then try to reach 2k leadership for mage, and 2500 leadership for warrior and paladin, keep use that scroll till you get red dragon (for mage) or black dragon (for warrior and paladin).

Then dump all your units, except repair droids and guard droids. With that unit, the four island should be very easy to clear.

And for that 4 archmage, just buy 1, trust me, buying more than 1 is harder to resurect, and there is no difference beetwen 1 or bilions of archmage in case of magic shield, and you need archmage mainly for its magic shield.