Spawn the Wither.

Deal nine hearts of damage in a single hit.

Kill the Enderdragon.

Enter an End Portal.

Cure a Zombie Villager.

Place a fully explored Map into an Item Frame.

Swim in lava while having the Fire Resistance effect.

Use a Dried Kelp block as fuel in a furnace.

Place four Sea Pickles in one block.

Discover 17 of 40 biomes.

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

Destroy a Ghast with a fireball.

Relieve a Blaze of its rod.