Use an Elytra to fly through a 1 by 1 gap while moving faster than 40 m/s.

Stay underwater for one full day without using potions.

Use a Dried Kelp block as fuel in a furnace.

Activate a Conduit.

Place four Sea Pickles in one block.

Tame an Ocelot.

Stop starvation using Rotten Flesh.

Play for 100 days.

Deal nine hearts of damage in a single hit.

Eat a Notch Apple.

Enter an End Portal.

Swim in lava while having the Fire Resistance effect.

Throw diamonds at another player.