Swim in lava while having the Fire Resistance effect.

Activate a Conduit.

Use the Totem of Undying to cheat death.

Dry a Sponge in a Furnace.

Dye your bed a different color.

Create an Iron Golem.

Poison a Witch with a Splash Potion.

Kill the Enderdragon.

Enter an End Portal.

Stop starvation using Rotten Flesh.

Kill 2 players in a round of public Battle mini game using a bow and arrow.

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

Bribe a Dolphin.