I would play using Through Attack! But, judging by appearances, I think the best hero is Shakrinuna (sorry, his name is hard to remember) with regeneration!!! Passive and Active skills are good!!! It's better to suppress chaos!
I conducted an analysis, and any hero who specializes in troops is much better.
For high-level creatures, the bonus to hit points is not significant, and at the very least, it's worse than the bonus to defense.