Combination 1 (recruited on "Islands of Freedom"):
Sea Wolves with the "Frenzied Attack" ability + Pirates
+ 
the remaining three stacks – whatever you like (I have: Inquisitors – resurrect, Cavaliers – tanks, archers – Skeletons) =)
+ wife with artifacts
+ it is desirable to upgrade the skills:
in the "Magic" branch:
and in the "Strength" branch:
+ spells:
(both are area-of-effect)
Tactics:
On the first turn, double-cast: "Haste" (attack units reach any enemy) + "Battle Cry" (all our units move before the enemy)
Pirates and Cavaliers attack two stacks, Sea Wolves with "Frenzied Attack" – the remaining three
In the screenshots (1280x1024): the beginning of the first round
Result: 2 rounds, all chests collected, without losses =)
Combination 2 (recruited in "Elind"): (About elves – a little later) =)
