Which faction poses the greatest challenge for the Dwarves?

Listening to the silence:
http://www.maps4heroes.com/heroes5/maps.php?keywords=%D1%EB%F3%F8%E0%FF+%F2%E8%F8%E8%ED%F3&type=&size=&sort=2
Day of Colossus:
http://www.maps4heroes.com/heroes5/maps.php?keywords=Day+of&type=&size=&sort=2
Genesis:
http://www.maps4heroes.com/heroes5/maps.php?keywords=Genesis&type=&size=&sort=2
(On this map, it's a bit unclear where everything is, and there are 3 portals that you'll be running through throughout the game... but everything will be okay later!)
All maps are 1vs1!
:smile54: