Deal nine hearts of damage in a single hit.

Swim in lava while having the Fire Resistance effect.

Travel by minecart to a point at least 500m in a single direction from where you started.

Breed two cows with wheat.

Kill the Enderdragon.

Kill a creeper with arrows.

Construct an Enchantment Table.

Destroy a Ghast with a fireball.

Kill a skeleton with an arrow from more than 50 meters.

Befriend five wolves.

Play a music disc in a Jukebox.

Construct a Nether Portal.

Use a saddle to ride a pig, then have the pig get hurt from fall damage while riding it.