You have to win with only pickaxes and food and not the right to keep the blocks you mine.
Here is the video of your given challenge!Win the game with F5 ( 3rd person look ) you can see your back
Here is the video of your given challenge!Win a game while sneaking for the entire round!
Here is the video of your given challenge!Win a game with “Hide HUD” enabled. This will be very challenging, as it’ll hide your health, hunger bar, and hotbar!