Smelt wood trunks using charcoal to make more charcoal.

Stop starvation using Rotten Flesh.

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

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

Use planks and sticks to make a hoe.

Gain the trust of an Ocelot.

Kill the Enderdragon.

Relieve a Blaze of its rod.

Defeat the Parasiter on Evil difficulty

Visit all Nether biomes [Bedrock Only]

Build some bookshelves to improve your enchantment table.

Construct a Dispenser.

Kill a creeper with arrows.