Zhuangzi - nice habbit. I've gotten used to it as well. The next habbit I picked up was to use teleport on the paladins that will put them right in the middle of the enemy lines. That works well with 1 tank + 4 ranged units though. With Dual-tank (Knights + Paladins in my case), things are different and Mass haste is better.
I also wrote to give the info on the time back spell. I sort of missed it during my last read of loreangelicus' post. So, here goes:
Time Back
lvl 5
Enemies can use it: No
cost: 50 000 gold
A unique spell which folds (commands is the direct translation) time. It returns the selected unit to its condition in the beginning of the previous round.
Lvl 1 - Works on targets lvl 1-3
Lvl 2 - Works on targets lvl 1-4
Lvl 3 - Works on targets lvl 1-5
Cost: 30 mana, al levels
Cost to improve: 10/20/30 crystals
This is the translation. It is not affected by any items, attributes or equipment. Some spells that have direct damage, duration, and so on are affected by intellect and other items. Haste and slow are a simple example, there are boots that add 1 turn to the duration.
As for the 0 losses, I agree that it's entirely possible. The 2 battles that will present some challenge are Zilgadis (the tower gremlin boss) and Baal (final boss). Zilgadis can be beaten up with relative ease - once he's down, leave one friendly gremlin tower while you're resurrecting the troops with Paladins + Phantom. I personally did it with 1/4 losses on Red/Black dragons, Paladins and Knights (and so decided to leave it like that since I had to return to Verona to restock anyway) with 2 tanking units next to his left and right feet, because the gremlin is like this:
Gremlin boss (Zilgadis)
1 spot 2 spot Middle Spot 3 spot 4 spot
RH RH RH & LH LH LH
RH is right hand, LH is left hand. Any hit that requires a RH retaliation hits every unit in the RH squares. The same goes for the left hand.
Baal is a different story. Stock up on mana items, especially if you're a warrior or a paladin (you can't summon the dragon here to transform rage into mana) and utilize them. After you're done, have baal summon a wave and kill everything but the imps. Bill Gilbert's forces should be dead by then (at least on impossible that is), which will allow you more than enough time to use phantoms to recover the lost units.
Those should be the hardest battles. I didn't bother doing a no-loss victory - although I think 232 no-loss out of 282 battles is a good example that it can be done. Calinda proved it already, so there's plenty of enjoyment in the moths to come with various challenges
EDIT: In the worst case scenario, I will try to translate the most important portions of the Russian guide. However, I will need some info on the English translation of the skills, spells, etc. I can guess, but people may get confused. So we'll see what happens