Play for 100 days.

Wear a full suit of Iron armour.

Use a saddle to ride a pig, then have the pig get hurt from fall damage while riding it.

Breed two cows with wheat.

Deal nine hearts of damage in a single hit.

Complete Chapter 1.

Stagger an enemy.

Construct a Nether Portal.

Construct one type of each tool (one pickaxe, one spade, one axe and one hoe).

Bake a cake using wheat, sugar, milk and eggs!

Acquire diamonds with your iron tools.

Use planks and sticks to make a sword.

Collect bonus letters for the first time and complete PACMAN.