Use an Elytra to fly through a 1 by 1 gap while moving faster than 40 m/s.

Dye all 4 unique pieces of Leather Armor.

Create and fully power a Beacon.

Spawn the Wither.

Cure a zombie villager.

Create an Iron Golem.

Smelt wood trunks using charcoal to make more charcoal.

Swim in lava while having the Fire Resistance effect.

Use Shears to obtain wool from a sheep.

Craft and place a Flower Pot.

Trade for the best possible price.

Breed two cows with wheat.