Teleport over 100 meters from a single throw of an Ender Pearl.

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

Spawn the Wither.

Acquire 30 Emeralds by trading with villagers or mining.

Cure a zombie villager.

Sneak next to a Sculk Sensor without triggering it

Brew a potion.

Visit all Nether biomes [Bedrock Only]

Play for 100 days.

Use a Dried Kelp block as fuel in a furnace.

Discover a Shipwreck.

Destroy a Ghast with a fireball.

Build some bookshelves to improve your enchantment table.