Time Served is a mystery as well as an achievement that requires the player to complete it.
- Excavate the praesidio remains in the prison for an ancient timepiece (damaged).
- Restore the damaged artefact, producing an ancient timepiece.
- Use the timepiece on the cell controller to the north (it may be safer to first click the door and then click "yes" to inserting the timepiece. Using the timepiece on the door may fail to work), inside the prison block of Kharid-et to complete the mystery. The controller will open a door to the east.
- The player Destroy was the first player who completed this mystery on 30 March 2020 which was shown in-game with the announcement: News: Destroy is the first to solve the 'Time Served' mystery!