Bounce 30 blocks upward off a Slime Block.

Power a Furnace with Lava.

Acquire 30 Emeralds by trading with villagers or mining.

Cure a zombie villager.

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

Bake a cake using wheat, sugar, milk and eggs!

Relieve a Blaze of its rod.

Gain the trust of an Ocelot.

Visit all Ocean Biomes.

Breed two cows with wheat.

Craft and place a Flower Pot.

Throw diamonds at another player.

Craft and place a sign.