Kill the Enderdragon.

Eat a Notch Apple.

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

Swim in lava while having the Fire Resistance effect.

Deal nine hearts of damage in a single hit.

Use Riptide to give yourself a boost.

Brew a potion.

Catch and cook a fish!

Kill a creeper with arrows.

Power a Furnace with Lava.

Craft and place a sign.

Relieve a Blaze of its rod.

Discover 17 of 40 biomes.