@suhericoba
First, she wasn't in the same attire as the people around her. She had a cross and was just standing at the door. He thought he could talk his way out AND he didn't want to hit a girl.
Once he found out she was an enemy, and dangerous to boot he went all out.
I like this, MC is OP because he actually went through an excruciatingly harsh training/conditioning program in which he happened to be the strongest because of his will to live, it's justified.