Overtime Mode (Dead Rising 2)

Overtime Mode takes place after the events of the 72 Hours Mode. This is unlocked if Chuck gives TK zombrex after he is infected when the zombies invade the safe house. This mode is an extension, adding another 24 hours in which Chuck must collect several items in Fortune City.

Story
After the credits, a cutscene will show Chuck looking for them on the monitors, but will find nothing. Then TK will contact him on his Transceiver, saying that he is holding Katey and Stacey hostage and wants Chuck to bring several items to him. When Chuck gets the final item, TK will order him to go to the arena. There, TK will ambush and capture him. After a cutscene, the last Psychopath fight in the game begins as you have to battle TK.

Items

 * Compromising Photo - Located in the Security Office of the Americano Casino (location of Lush-ious Lady)
 * Expensive Champagne
 * Case of Queens - Located in the Underground Lab
 * Lab Suit - Located in Roy's Mart
 * USB Key
 * Mobile Headset - Located on the floor in front of the elevator in the Yucatan Casino that was used to chase Sullivan
 * Gift Basket

True Ending
After he is defeated, Chuck saves Katey and Stacey, and they exit the arena. For PC and PS3 owners, the story ends here, but Xbox 360 owners will continue Chuck's story in Case West.