Prevent the walking tank from being destroyed by the Drone Swarm in "Induction."

Kill a creeper with arrows.

Relieve a Blaze of its rod.

Play a music disc in a Jukebox.

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.

Breed two cows with wheat.

Construct a Nether Portal.

Acquire diamonds with your iron tools.

Wear a full suit of Iron armour.

Smelt an iron ingot.

Turn wheat into bread.