This achievement requires you to watch a playthrough of another player.
1) On the main menu go to Score Attack.
2) Click Leaderboard
3) For the chapter selection enter any specific chapter (I chose level 1).
4) You will now see a list of names. Highlight a name, click
to download the replay, and then click on your specific storage and save slot to save the replay.
5) Go back to the main menu and click Gallery Mode and select your saved replay to unlock the achievement.