I took a look at map 6424УўРЫґ«
I don't quite understand how to deal 200% damage to 20 ogres and then 40 thieves with one crusader, 4 archers (50-60), and (?) a tent(?). You can choose gold as a starting bonus, find a 2000 treasure chest, and get a ballista; then the ogres quickly shoot down the crusader without the tent.
Luna also faces some problems when harpies split into 6 stacks instead of 7, and one hit of the wall is no longer enough for them.
The harpies split into 6 stacks with SoD SP enabled and into 7 stacks with HD+ without SoD SP. However, I am more worried about the obsidian gargoyles. They have more health points. Luna spent several level-ups on attack; I really hope that it won't be necessary to hunt for massive level increases in spell power here.
Dandy, take a look at this map. I think it might interest you ;)