Use one of the Saves provided in the first Forum Post. More Information in the Forum.
Obtain your first Yoshi Egg and place it in the Yoshi Garden.
Fill your Garden completely and have eight Yoshies in it.
Give a Yoshi a new Name.
Buy the Cardboard Box for the Yoshi Garden.
Buy the Soccer Ball for the Yoshi Garden.
Buy the Jack in a Box for the Yoshi Garden.
Buy some Apple Seeds for the Yoshi Garden.
Buy some Melon Seeds for the Yoshi Garden.
Unlock the first Hat for your Yoshies.
Unlock all Hats for your Yoshies.
Have eight Yoshies in the Yoshi Garden and all of them wearing different Hats.
Let a Yoshi die while you are in the Yoshi Garden.
Witness the Pairing of two Yoshies in the Yoshi Garden.
Give a Yoshi a Fruit to improve the Skills.
Give a Yoshi a Powerdrive to improve the Skills.
Have ten different Powerdrives in the Inventory.
Win the Baby Race in the Autumn Forest.
Win the Adolscent Race in the Autumn Forest.
Win the Adult Race in the Autumn Forest.
Win the Baby Race in the Wario Stadium.
Win the Adolscent Race in the Wario Stadium.
Win the Adult Race in the Wario Stadium.
Win the Baby Race in the Yoshi Village.
Win the Adolscent Race in the Yoshi Village.
Win the Adult Race in the Yoshi Village.
Win the Baby Race in the Water Valley.
Win the Adolscent Race in the Water Valley.
Win the Adult Race in the Water Valley.
Let at least two of your Yoshies race each other.
Collect a total of 100 Coins in one Visit of the Yoshi Garden.