I want to congratulate you and reward you on reaching this next phase of FeH. As a fellow player, I feel like it is my duty to inform each of you as to when a meta-shifting change occurs.
This however, is not one of those. It is a meta-solidifying change. Hardy Fighter is going to cause you problems. Severe problems. And here is why:
If you cannot kill him on turn 1, and if you are not using a guard effect, this man will have 75% DR every single time you attack him. Steady breath means his retaliation attack will recharge pavise fully for your 2nd attack. This will work with aegis as well. That means that even if hit twice, he’ll take a total of 50% damage from ONE attack. That’s worse than Bike’s level of DR. And this cannot be bypassed by Deadeye or sublime heaven.
Expect this setup or something similar to it on every save armor you see in top tiers from hereon out. Because while they may not be able to ohko you, you will not be able to orko them.