Construct an Enchantment Table.

Acquire diamonds with your iron tools.

Smelt wood trunks using charcoal to make more charcoal.

Destroy a Ghast with a fireball.

Harvest some leather.

Construct a furnace out of eight cobblestone blocks.

Create an Iron Golem.

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.

Attack and destroy a monster.

Smelt an iron ingot.

Teleport over 100 meters from a single throw of an Ender Pearl.