Dead Rising 2

A very easy method that fits nicely with a Hero of Fortune City run starts at 7:00AM on 9/26.

Going into this run, make sure that you've completed ALL the other side missions except "Rock Heroes" and "Tastes Like Chicken". It is important that you verify that there are no hidden survivors on the map, such as Lenny, or the looter from "One Man's Trash" otherwise there will not be room for all 8 survivors to load.

Immediately after giving Katey her Zombrex at 7:00AM, go to the food court and defeat Chef Antoine. Rescue Cinda and Jasper, then go to the stage and rescue Jeanna, Allen and Floyd. Then rush to Kathy's Space (R207) to rescue Erica, Rose and Bessie. If you find that you've spent too much time with Antoine, go to Kathy's Space first before the stage. Once you have all eight in your party at a time, the trophy will pop.

Interesting fact: This is an easily boostable trophy If you have 8 survivors following you, and you invite a co-op partner to the game, they'll get the Come On Follow Me trophy automatically. If you keep a saved game backed up from a point where you have 8 followers, you can reload it at any time to make this trophy easier on your friends.