Swim in lava while having the Fire Resistance effect.

Use Shears to obtain wool from a sheep.

Craft and place a sign.

Mine or purchase 30 Emeralds.

Throw diamonds at another player.

Build some bookshelves to improve your enchantment table.

Discover 17 of 40 biomes.

Deal nine hearts of damage in a single hit.

Brew a potion.

Relieve a Blaze of its rod.

Destroy a Ghast with a fireball.

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

Befriend five wolves.