Zombie evolution: Undead rising

Ryan was an orphan who had always wanted to die because of the unfair treatment he got from the society but he was too much of a weakling to kill himself. Yet an opportunity presented itself to him when a zombie apocalypse occurred, he thought it was the perfect chance until he was bit by a zombie and began regreeting his decision. Unfortunately, he didn't die instead he awoke as a zombie armed with a system who's objective was to destroy humanity. Would he still help the people of society that once disdained him or would he watch from the shadows?