Forced by the System to Become a Killer, I Went Crazy Killing

Ye Yan is a killer, a killer who has never killed anyone after joining the killer organization for three years. As a time traveler, he was ecstatic the moment he knew he had a golden finger, but when he saw the first mission of the system, he felt as if he was struck by lightning. [Ask the host to kill Li Xunhuan, the leader of the Heji Sect. After completing the task, you can randomly select a skill from the multiverse] Can a newbie kill a boss with maxed-out equipment alone? In order to complete this task, he started preparing early... But ten years have passed, and he has not yet waited for Li Xunhuan...