Craft all minecraft blocks workbench with four blocks of wooden planks. Kill a mob while wearing the same type of mob head. Mine 1,728 Cobblestone and place it in a chest. Acquire diamonds with your iron tools.
Use a Hopper to move an item from a Chest Minecart to a Chest. Punch a tree until a block of wood pops out. Use Shears to obtain wool from a sheep. Construct a furnace out of eight cobblestone blocks. Relieve a Blaze of its rod.
Wear a full suit of Iron Armor. Build some bookshelves to improve your enchantment table. Place 9 fully explored, adjacent map items into 9 item frames in a 3 by 3 square. Construct one type of each tool.
Travel by minecart to a point at least 500m in a single direction from where you started. Deal nine hearts of damage in a single hit. Cook and eat a pork chop. Craft and place a Flower Pot. Gather all 16 colors of wool.
Smelt wood trunks using charcoal to make more charcoal. Destroy a Ghast with a fireball. Connect 3 Chests to a single Furnace using 3 Hoppers. Kill a Skeleton with an arrow from more than 50 meters.
Swim in lava while having the Fire Resistance effect. Poison a witch with a splash potion. Bake a cake using: wheat, sugar, milk and eggs. Use planks and sticks to make a pickaxe.
Use planks and sticks to make a sword. Bounce 30 blocks upward off a slime block. Use a cauldron to dye all 4 unique pieces of leather armor. Use a saddle to ride a pig, and then have the pig get hurt from fall damage while riding it. Push a piston with a piston, then pull the original piston with that piston. Breed a mule from a horse and a donkey.