Elves are shooting at vampires; there are 6 left (the sixth vampire has 8 health).
Why always 8?
Thanks for the tactic. I think it should also be posted in the thread about difficult battles.
P.S. Personally, I don't go into the Dungeons on the first day (there are enough piles of gold and chests), but only when I already have a group of Elves (it's more reliable, and the losses are slightly smaller).