Discover a Shipwreck.

Use Riptide to give yourself a boost.

Place four Sea Pickles in one block.

Using the Frost Walker boots, walk on at least 1 block on frozen water on a deep ocean.

Use the Totem of Undying to cheat death.

Levitate up 50 block from the attacks of a Shulker.

Kill a Mob while wearing the same type of Mob Head.

Poison a Witch with a Splash Potion.

Dry a Sponge in a Furnace.

Bounce 30 blocks upward off a Slime Block.

Eat a Notch Apple.

Gain the trust of an Ocelot.

Wear a full suit of Iron armour.