1. First Black Coin
To get the first Black Coin, jump over a flying Bullet Bill to get the boost needed to reach the first Black Coin.
2. Second Black Coin
For the next Black Coin, hop on the first two moving platform. While on the second moving platform latch onto the side of the wall nearby and slide downward to get the second Black Coin.
After taking the second Black Coin, hop onto the nearby moving platform and jump back a few steps further to give you the chance to go back on the two moving platforms and onto the nearby wall.
3. Third Black Coin
The third Black Coin is fairly easy to locate and take. All that’s needed is for Mario to hop on a Bullet Bill to make a leap off to the row of Coins floating in the air.
4. Fourth Black Coin
Hop on the two moving platforms and then make a wall jump to the nearby wall. Once you latch on the wall, slide down the wall to take the back arrow that will lead you to the nearby moving platform. Once you’re on the platform, take the fourth Black Coin once the moving platform moves up.
5. Fifth Black Coin
Jump from the first moving platform around a square and then jump off the Bullet Bill to make sure to reach the last Black Coin.