So, this guide will help you locate a backpack in Big Walk and unlock the Big Pack trophy. Related Big Walk: How to Solve the Yellow Maze Puzzle (Red Tower) The Yellow Maze is a puzzle in Big Walk that will help players acquire one of the gourd-like pieces required to complete the Red Tower section. How to Get a Backpack in Big Walk (Big Pack Trophy)While there are multiple backpacks hidden around Big Walk's map, I'll be showing you the location of one you'll find the earliest. As soon as you wear the backpack in Big Walk, you'll see a white icon at the bottom of the screen, confirming it's on. The Big Pack trophy/achievement in Big Walk will immediately pop up for you as soon as you've equipped the backpack.