I think I may have got myself stuck

[DGDobrev]

I would not recommend hard until you've gotten the hold of this game and got used to playing with minimal losses. I agree that's it's sort of hard to get used to the long battles and multiple resurrections.

On armored princess it's even harder, because you're pretty much deprived of any mass ressurrecting tactics save for magic spring, so the sooner you get used to playing with minimal losses, the better

That means no blindly charging into battle, don't waste units so easily just because you've won the combat and so on and so forth. Sometimes it's much better to avoid a battle and do it at a later time.