Here, I can give an example of how you can easily defeat all the neutrals with demons:
Grol - pump up Withering Flame + Attack + Tactics, divide the dogs, and take out all the archers and mages (if there aren't too many of them).
Ini, with the dogs' tactics, can reach the enemy in one turn (and if you find boots of speed, it's even better). I cleared out the Sylvans and Masters on the mines in the second week without any losses (and it's also very important to somehow increase luck in battle, it can save you sometimes). With mages, you can do the same, but only if there aren't too many of them...
After that, you can develop him however you like, you can pump up luck or machines... but that's not the point))).
