That's a really questionable change. They nerfed stats for some characters (including mage, for some reason, who was already annoying to play as because it fails every stat check). They also nerfed Armor Crusher, now it takes 2 turns to use it and additional skill point to learn. Demon King has 400 HP, so if they added armor, she's now incredibly durable. You could use a trick and use up one magic scroll that shatters armor, but it also means staying defenseless for 2 turns.
I don't even know how to get the hardest achievement of beating the game on level 1 anymore. Because you can't learn Sunderer on level 1, you can't afford wasting perk points, while using Armor Crusher is still too costy in getting damage yourself.