RTABC Guide/Seek the 8 Red Coins
This is a guide for how to beat the star Seek the 8 Red Coins with 0.5 A presses in an RTABC run.
Method
This method requires entering through the Go on a Ghost Hunt version. Holding the A button as you enter, collect all the red coins on the lower floor. Note that for one, holding A to do a wall kick is required. After that you can let go. Defeat all the ghosts and the Big Boo to get access to the upper level. Collect the last red coins before grabbing the star.