tips on no casualty run on impossible difficulty

[loreangelicus]

I'm 99% sure lost units to Sacrifice would count as casualties if you don't find a way to bring that stack's troop count back to equal to or greater than what it started with in the battle. Without Resurrect, Time Back is your best bet.

Hmmm... Ellinia is your next best chance of getting Resurrect after the initial Darion continents. Even if you are not going for a quick time and skip most battles pre-Ellinia, some battles might be tough to do without Resurrect; the required castle siege to free the dwarf king's son comes to mind.

Well, if you find more Inquisitors (Islands of Freedom, initial shop) then that might suffice, but only if you have Gift.

Another alternative is if you have Phantom and could spam this out in tough battles, but this is an even harder route.

Too many "ifs" for my taste, making sure Resurrect is at the paladin at Marshan Swamp for mage/warrior is easier. Which is why I took paladin, so that instead of shooting for Resurrect I could shoot for good items at the starting castles (I got Ancient Amulet and Gladiator Sword, bought them pre-turtle on 02:00H day 2 using marauders).