Complete one challenge.

Complete one optional tomb.

Acquire diamonds with your iron tools.

Destroy a Ghast with a fireball.

Brew a potion.

Construct a Nether Portal.

Catch and cook a fish!

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

Smelt an iron ingot.

Construct a furnace out of eight cobblestone blocks.

Construct a better pickaxe.

Craft a workbench with four blocks of wooden planks.