You get this achievement for tidying up twice. There are three opportunities to do this in the game.
1. You can set the clock hands to midnight in Betty's room while in Bexhill.
2. You can straighten out the suitcase Hastings is packing after Brexhill.
3. You can straighten out the planter outside of the mansion on your second visit to Churston.
If you do two of the three you'll unlock this achievement, as well as