Cook and eat a pork chop.

Acquire diamonds with your iron tools.

Kill a creeper with arrows.

Harvest some leather.

Use Shears to obtain wool from a sheep.

Construct a better pickaxe.

Attack and destroy a monster.

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

Use planks and sticks to make a pickaxe.

Craft a workbench with four blocks of wooden planks.

Open your inventory.

Defeat Seymour Omnis