I think Medieval Unity should be a hard endurance type badge. All you have to do is spam undead halberdiers and you win, but it still takes like an hour or two to beat all of the maps because the game is so slow paced.
I thought it was gonna be really easy at first, and it was till level 8, that one gave me some trouble, and 9 a little, but 10 was easy and I got the hard badge.
Wtf, I was fighting these guys that I knew had 70 health, and I hit him for 50, and I had low health but I was pretty sure I was gonna level up, so I attacked again and did 23, and HE DIDN'T DIE. He hit me again and I died.