Swim in lava while having the Fire Resistance effect.

Use a Grindstone to get experience from an enchanted item.

Cure a zombie villager.

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.

Visit all Nether biomes [Bedrock Only]

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

Kill a creeper with arrows.

Build some bookshelves to improve your enchantment table.

Construct an Enchantment Table.

Create an Iron Golem.

Turn wheat into bread.

Breed two cows with wheat.