What titans?

I already told you, there are no titans. But because of the drowned and other things, titans can be summoned easily if you prolong the battle. Breaking through magic resistance is easy.
Magic doesn't matter, whether it's Hafiz or not. The HP of gremlins doesn't increase.
You also need to get plague in the path.
By the way, there are streams about The Eastern Expedition, where you can see how they manipulate the AI on the battlefield. It's strange, but it doesn't work as well on the "Warrior" as it does on the "Hero".