The phrase "mission accomplished" is often used to signify the successful completion of a task or goal. However, if you're looking for more creative ways to express accomplishment, there are many synonyms to choose from. Here are a few options: "job well done," "mission fulfilled," "objective achieved," "goal attained," "task completed," "victory secured," "mission finished," "mission concluded," "mission achieved," and "mission successful." Each of these synonyms conveys a sense of accomplishment and satisfaction, and can be used interchangeably with "mission accomplished" depending on the context and tone of the statement.