Instructions
Pick up the three health books in the mall to increase the amount of health that eating food will regenerate. The health books are found in the empty room next to Crislip's Home Saloon, in The Sinister Read store and in Sir Book-A-Lot. For maximum efficiency, do not eat any food until you have all three health books.
Collect food in the mall. As you travel around the mall, you will come across food items. Keep in mind that after you pick up a piece of food, it will not regenerate. Areas that contain valuable food items that restore larger amounts of health include the maintenance tunnel, Crislip̵7;s Home Saloon, Chris̵7; Fine Foods, Frozen Dreams and Colombian Roastmasters. There is only enough food available in the mall to sustain Frank for just over five days. To survive an entire week, it is absolutely necessary to kill psychopaths and survivors.
Kill psychopaths to earn food. Psychopaths spawn every day at in-game times 00:00, 07:00 and 19:00. After successfully killing a psychopath, a cardboard box of food will appear. Approach the box to pick up the food. Keep in mind that if you leave the area, the box will disappear and you will not earn the food that was dropped.
Eliminate survivors. In addition to psychopaths, there are also survivors spread throughout the mall that you should kill to earn food. While psychopaths normally drop cardboard boxes containing seven units of food, survivors only drop one or two. This food is still valuable though and should always be picked up when earned.