Talk with Rass

Die to a Boss.

Befriend twenty stray Cats.

Defeat a Ravager.

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

Levitate up 50 block from the attacks of a Shulker.

Defeat an Elder Guardian.

Tame a Horse.

Poison a Witch with a Splash Potion.

Power a Furnace with Lava.

Dry a Sponge in a Furnace.

Create and fully power a Beacon.