Play for 100 days.

Harvest some leather.

Craft and place a sign.

Acquire diamonds with your iron tools.

Wear a full suit of Iron armour.

Smelt an iron ingot.

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

Use planks and sticks to make a sword.

Attack and destroy a monster.

Craft a workbench with four blocks of wooden planks.

Open your inventory.

Obtain the Cucumber that appears after dropping 2 rocks in a certain Round.