Complex sentence: While not possessing the kind of martial arts training that Bruce Wayne acquired, Hush has proven his ability to fight hand-to-hand; he shows expertise and competence, being able to fight almost on par with Batman.
Split into simpler sentences: While not possessing the kind of martial arts training that Bruce Wayne acquired, Hush has proven his ability to fight hand-to-hand. He shows expertise and competence, being able to fight almost on par with Batman.