Okay, some thoughts on the endless saga of Demoness Impossible No-loss...
I'm up to level 48, having just roflstomped my way through Okkarland against Very Hard and Deadly stacks.
Wizards are ridiculously powerful. Buffed by the Archmage staff, given ridiculously high morale by the Amulet of the Twilight Order (Heroic), halving stacks like crazy with Beserker level 3 (15% chance of having PER attack, and the Wizard hits three stacks with one attack when he's in the Fighting Trance). I've picked up a couple of items that increase Crit chance - Undead Master Belt +5% and, even better, a Dagger of Judgement, +20%!!!, that I got from a treasure chest in battle
So the Wizard has a Crit chance of 59% and I feel sure that he's halving enemies more than 15% of the time (is this chance affected by whether it's a crit?) I just know that when I finish the game, Wizards are going to be my biggest damage dealer BY FAR.
The rest of my team consists of Dark Paladins, Demons, Executioners and Demonologists. You could use whatever unit you liked in the place of these last three. The only essentials are the Wizards for damage dealing + Magic Shield and the Dark Paladins for resurrecting. At a certain stage of this game, roughly from fights 120-170, I was struggling to win some battles no-loss. I was having to redo fights and look for the easiest fights. But once you get a stack of Dark Paladins, it's game over. Sorry, you also need Phantom in case you've taken too much damage for the initial resurrection, and Calm Rage too. But once you have these spells, we're back to the old Paladin + Phantom + Calm Rage infinite resurrection trick. My main problem here was that there was only about 130 Dark Paladins available in my game, and my current leadership (32k) allows for over 250, so I've had to use Sacrifice to fill out the stack, and this is tedious because I only have Sacrifice at level 1, not wanting to waste the crystals.
Is it just me or are crystals really scarce in this game? I only have about 12 spells learned and I never seem to have enough, so I've taken to buying all the trashy artifacts etc available in the game and destroying them for the crystals.
At level 48 I've cleared all islands except Amazonia (which I'll do next), Galenirim and Aralan, and also Helvedia. I'm up to 269 fights without loss, and I'm guessing that with some failed quests that I couldn't be bothered with (such as when they conflicted with other quests) I must be looking at about 400-450 fights for the whole game.