Kill the Wither.

Cook and eat rabbit meat. [Bedrock Only]

Push a piston with a piston, then pull the original piston with that piston. [Bedrock Only]

Bounce 30 blocks upward off a Slime Block.

Poison a Witch with a Splash Potion.

Use a hopper to move an item from a chest minecart to a chest. [Bedrock Only]

Play a music disc in a Jukebox.

Discover 17 of 40 biomes.

Befriend five wolves.

Stop starvation using Rotten Flesh.

Gain the trust of an Ocelot.

Relieve a Blaze of its rod.

Use Shears to obtain wool from a sheep.