Relieve a Blaze of its rod.

Wear a full suit of Iron armour.

Create an Iron Golem.

Kill a creeper with arrows.

Craft and place a Flower Pot.

Breed two cows with wheat.

Play a music disc in a Jukebox.

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

Harvest some leather.

Construct a better pickaxe.

Craft a workbench with four blocks of wooden planks.

Punch a tree until the block of wood pops out.

Travel by minecart to a point at least 500m in a single direction from where you started.