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I just tried taking a Dungeon with 5 vampires using a level 1 hero. Attack and defense are 0. The army consists of 75 upgraded Trolls (it's pointless not to upgrade them), 10 Harpies, and 7 Eyes.
I didn't use any magic. The Dungeon is on grass. The arrangement is: 1 Troll, 7 Eyes, 1 Troll, 73 Trolls, 8 Harpies, Harpy, Harpy.
The losses were 2 Harpies and 3 Trolls.
If the hero had combat skills or a blessing, the maximum damage would have been even lower.
I think there shouldn't be any problems with Goblins on levels 10-15 either. :D
I didn't use any magic. The Dungeon is on grass. The arrangement is: 1 Troll, 7 Eyes, 1 Troll, 73 Trolls, 8 Harpies, Harpy, Harpy.
The losses were 2 Harpies and 3 Trolls.
If the hero had combat skills or a blessing, the maximum damage would have been even lower.
I think there shouldn't be any problems with Goblins on levels 10-15 either. :D