Okay, imagine you're playing a game with a friend and you just finished the game. Usually, when you finish a game, you start at the beginning and play through it again, right? But a reverse walkthrough means you start at the end of the game and work your way back to the beginning. It's like rewinding a video or movie so you can watch it again but in reverse order. This can be helpful because sometimes, things happen at the end of the game that can give you clues or hints about what to do at the beginning of the game. It's like starting a puzzle from the end and working your way backwards. It can be a little tricky, but it's a fun way to play the game differently and maybe discover things you didn't notice before.