at least two floors and a door which can be opened from a distance!
Build a monster trap around the dungeon!
Make a wheat, pumpkin, melon farm!
Make an automated cactus farm!
Find the broken music disk!
Build a giant mushroom!
Make 3 bookshelves!
Catch 3 fish!
Find the destroyed portal!
Craft flint and steel!
Enter the nether!
Make a mob farm/exp farm out of cobblestone!
Make an animal farm by breeding animals!
Add 10 glowstone light posts around the normal island!
Craft an enchanting table!
Craft 9 potions! *
Play the broken record!
Make a nether wart farm! *
Enchant a diamond pickaxe!
Craft a golden apple!
Make every colored wool!