Construct one type of each tool (one pickaxe, one spade, one axe and one hoe).

Kill a creeper with arrows.

Turn wheat into bread.

Use Shears to obtain wool from a sheep.

Build some bookshelves to improve your enchantment table.

Destroy a Ghast with a fireball.

Breed two cows with wheat.

Use planks and sticks to make a sword.

Acquire diamonds with your iron tools.

Attack and destroy a monster.

Cook and eat a pork chop.

Harvest some leather.