Read the Message Block in Yoshi's House
Beat the Boss and read the final Message Block
Complete the stage and beat the Boss without dying or taking damage (no checkpoint)
Complete the stage and beat the Boss without collecting a Power Up (must start as small mario, no checkpoint)
Complete the stage and beat the Boss without collecting a coin (no checkpoint)
Complete the stage and beat the Boss without touching the freezing cloud puffs (no checkpoint)
Collect all 5 Yoshi Coins in the Stage