"Don't worry, his eyes will be yours and the names will be mine." These arrogant words from a man who could barely harm them without going for the weak points of a person.
But that arrogance was pretty sound and backed up by his skillset made him a threat anywhere he went.
I would even call him a precise killing machine, born for the sole purpose of assassination.
He was a man that has forged his weak body efficiently, focusing more on utility over form. And due to the last few months of constant practice in a bid to hunt down his daughter's killers. He had become better.
Revenge is the strongest emotion known to humans, it drives them to do impossible feats and sometimes, they succeed at it as well.
The same was true for this man. Although he didn't appear to be as broken as someone should be in his position, the very fact that he now lives for the sole purpose of revenge was proof enough of his desires.