To achieve notoriety means to become well known for something bad. 声名狼藉
noun [专属名词] 臭名昭著，声名狼藉
He achieved notoriety as chief counsel to President Nixon in the Watergate break-in. 在水门事件中，他作为尼克松总统的首席辩护律师被搞得声名狼藉。
not(知道) + oriety(多) → 坏事人所共知 → 臭名昭著
(gain / achieve notoriety for / as … 因为/作为…而臭名昭著的)