NSMB VS Challenges: Underground

This doesn't look too hard, but it was very painful. The main reason or this is because you have to break the bottom row of blocks, and one mistake gets you killed. There is also an impossible star position (in the pocket with the mushroom). You need the red shell to break one specific block at the bottom of the screen or else it becomes nearly impossible. The bottom blocks are only really possible because if you hold jump right before hitting the blocks, you can jump while still breaking them.
I actually made the song for this one a while ago.
Tags: nsmb nsmbds mariovsluigi mvl mario versus vs challenge challenges