First possible achievement of the game, obtainable in Chapter 1.
Once you start the game, you get a long cut scene which introduces one of the main characters, Lucas, and the unexpected situation he finds himself in.
After the cutscene ends you can get the first achievement by simply standing around and waiting. After 2 1/2 minutes, the game will shift to a split screen and you'll see the police officer get up and head to the bathroom. Once he enters and catches you, the achievement will unlock.