Exactly. Troops are always randomly generated, so you may have a better roll the next time you play the game. I for one, won't mind less ranged units on the human troop. I just couldn't drop their numbers well enough before they could kill 1 imp. I have the 1 lost imp save, but... but... oh well. We will try again. I am also going for lvl 2 Diversion this time around.
That was also pretty much how KBWOTN no-loss play-throughs were made. Luck out vs less opposition on the bottleneck battle, and you are golden. GG.
EDIT: Allrighty, with lvl 3 Diversion (to achieve that you need level 5 and that requires you beating the Knight hero in Atrixus, which is a very tough fight) and some cunning planning, I am past the 3 guards. Demoness swapping/charming enemy troops when needed for the win. Feed the troops summoned by the Demon to the enemies by swapping their ranged units with it, drop the swapped ranged unit down to a low count, and charm them with the Demoness. Now use it against them
Fun times. Haven't felt that since KBAP.