Teleport over 100 meters from a single throw of an Ender Pearl.

Enter an End Portal.

Power a Furnace with Lava.

Construct a Nether Portal.

Build some bookshelves to improve your enchantment table.

Smelt wood trunks using charcoal to make more charcoal.

Play a music disc in a Jukebox.

Attack and destroy a monster.

Harvest some leather.

Catch and cook a fish!

Turn wheat into bread.

Throw diamonds at another player.

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