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

Construct an Enchantment Table.

Kill the Enderdragon.

Enter an End Portal.

Deal nine hearts of damage in a single hit.

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

Acquire 30 Emeralds by trading with villagers or mining.

Cure a zombie villager.

Brew a potion.

Stop starvation using Rotten Flesh.

Kill a creeper with arrows.

Cook and eat a pork chop.

Tame a Horse.