Construct a Nether Portal.

Destroy a Ghast with a fireball.

Use a saddle to ride a pig, then have the pig get hurt from fall damage while riding it.

Use planks and sticks to make a hoe.

Bake a cake using wheat, sugar, milk and eggs!

Smelt an iron ingot.

Use planks and sticks to make a pickaxe.

Use planks and sticks to make a sword.

Acquire diamonds with your iron tools.

Craft a workbench with four blocks of wooden planks.

Open your inventory.

Complete Post-Human