1. First Black Coin
To get the first Black Coin, hop on the trio of Dash Back buttons, bounce off the line of bricks above, hop on another trio of Dash Back buttons, and then bounce back from the column of red bricks at the top in order to get the first Black Coin.
Note: After getting the first Black Coin, make a mid-air jump to avoid landing on the Spike below.
2. Second Black Coin
Once you’ve reached the stair-like platform, take the platform level in the middle and then you’ll find the pathway that will lead you at the bottom—which is where the second Black Coin is located.
3. Third Black Coin
Get inside the cannon and then tap once your cannon is facing the right side at the cannon’s highest level.
4. Fourth Black Coin
Take the higher level of platforms and then jump on a Spike that’s located at the highest level of platform in order to get the fourth Black Coin.
5. Fifth Black Coin
To get the fifth Black Coin, enter the cannon found along the way and then tap the cannon once it is facing the right most area and has reached the lowest level.
Note: Be sure that you have eaten a mushroom since there is a big chance that you will get hit by the Spike Ball that Spike is holding as you make your way to grab the fifth Black Coin.