Hey Guys & Gals!
This is my 100% Achievement/Trophy Guide walkthrough (& All Collectibles) for 11-11 Memories Retold and is divided into 2 parts.
So you can get this at basically the very start of Part 2 - Chapter 3.
Harry will now be in France after escaping the tunnels with Kurt and Major Barrett will ask you to join him in a game of Slaps.
Ignore him for now, and head straight up just a little bit until you see a street on your left where the Football is.
There is no kick button so gently walk the ball into the wooden bucket at the end to unlock.
If you prefer a video guide then skip ahead to 1:43:30 to see exactly where it is in my part 1 video.