Stop, Drop and Roll: Achievement PSN of South Park: The Fractured But Whole

The TimeFart Pause is unlocked later in the game through a main mission. It allows you to completely stop time during combat, walk up to enemies and press to hit them until time continues. You only have a few seconds for this. The trick is to leave one single low-health enemy alive. Then use time fart by pressing + , and kill the last enemy before the timer resets.