Order of judgment

Once the world united, order of judgment was established. Its members, doomguards, are powerful individuals who roam around the world with one rule on mind - enforce the law. Old days of courts are long gone. Now it's time of doomguards, who enforce the law as soon as they see someone breaking it. Doomguard's job is to judge, enforce the law and punish those who deserve it. You are one of them and you feel good about this job, but can you always judge correctly? What in case of morally ambiguous situations? What if you give punishment that's too severe or not serious enough? What if you make mistake? Take role of a doomguard and face all the problems that come with it. Bask in glory of punishing evildoers, but we aware...some of your actions may prevent you from peaceful sleep. Scenario is inspired by Robocop / Judge Dredd, just portrayed in a different way in a medieval fantasy setting.