If he finds the spirit to persevere, even a fully developed Dwarf can take on Harpies with level 1 units, although it will take as long as Gervulf taking on a crowd of Golems with a ballista... I played as Gunar there, but when Lorelei appeared on the first map, I immediately made her the main hero. I really wanted to play as her, not Gunar, it's a shame that the game didn't allow it :(

Added 1 minute ago

If he finds the spirit to persevere, even a fully developed Dwarf can take on Harpies with level 1 units, although it will take as long as Gervulf taking on a crowd of Golems with a ballista... I played as Gunar there, but when Lorelei appeared on the first map, I immediately made her the main hero.

And once, because she appeared on map 111, I played against a double opponent with 8mm6.

Added 1 minute ago
I don't understand why anyone considers her such a weak hero without any justification...