For automatically-unlocking, title-managed achievements to update based on stats changes, you must set the bIsTitleManaged flag to true. This flag configures the client to listen for the Online Services Stats Interface's FStatsUpdated event to automatically update achievement state in response to stats changes. The bIsTitleManaged flag's default value is false. If you do not set this flag to true, achievements will not automatically update based on stat changes configured in the achievements definitions in DefaultEngine.ini.