This page offers a guide on how to collect all red coins in The Red Coins of Hillside Cave. This is a hidden episode and can only be accessed if you’ve completed Episode 3: The Hillside Cave Secret. You can access the cave again by revisiting Episode 3 or 6.
Collect all 8 Red Coins
Once you’ve entered the cave, you’ll need to groundpound on the red button. This will spawn in the red coins and you’ll have one minute to collect all 8 coins. This area will be significantly easier than last time you were here since you have your FLUDD pack this time, meaning you can hover around and avoid tricky jumps.
The 1st coin is on the second moving block just up ahead. On the orange moving blocks, you’ll find 4 coins - 1 in each section of this orange block area. When you’ve made it past the orange block section, you can the 6th and 7th coins on the spinning star platforms to the right. Then, head back onto the long path with the white cubes on it, and from there jump and hover over to the other spinning star where you can grab the 8th coin. The Shine Sprite will spawn at the end of the obstacle course, so you’ll need to make your way back over to the long path then across the final set of spinning stars to the last platform.