In Chapter 14 you’ll be able to return to the children’s hideout in the Sector 5 Slums to participate in the new and improved hard difficulty Whack-a-Box challenge. Almost everything you learned from the Normal difficulty run still applies, the boxes are just in different locations, typically in smaller stacks. Equip the Iron Blade Weapon and use Triple Slash whenever your ATB gauge is charged enough to do so. Seek out the Time Boxes first, and prioritize stacks of small boxes over the large ones, as the amount of time it takes to destroy them versus their point value is rarely favorable. Check out the page for Whack-a-Box for more details.