A core mechanic of the Dead Rising franchise is the ever-ticking clock towards failure of story missions. I, and many other players, find this to be threatening and limits enjoyment from the game. Near the end of Dead Rising 3 one of chapter 8's story missions will pause the countdown until the mission is completed. During this time protagonist Nick Ramos can explore with relative impunity and use the time to level up and acquire collectibles.
Is there a mission in Dead Rising 2 with a similar effect? If not, is there any other way to stop the in-game timer and explore freely without sacrificing the main questline?