Spawn the Wither.

Dig up a buried treasure. [Bedrock Only]

Use Shears to obtain wool from a sheep.

Use the Totem of Undying to cheat death.

Swim in lava while having the Fire Resistance effect.

Visit all Nether biomes [Bedrock Only]

Mine 1,728 Cobblestone and place it in a chest.

Use planks and sticks to make a hoe.

Harvest some leather.

Use Riptide to give yourself a boost.

Construct a furnace out of eight cobblestone blocks.

Craft a workbench with four blocks of wooden planks.

Connect three chests to a single furnace using three hoppers. [Bedrock Only]