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

Build some bookshelves to improve your enchantment table.

Stay underwater for 2 minutes.

Breed two cows with wheat.

Catch and cook a fish!

Discover 17 of 40 biomes.

Collect any fish in a bucket.

Acquire diamonds with your iron tools.

Smelt an iron ingot.

Use planks and sticks to make a sword.

Use planks and sticks to make a hoe.

Construct a furnace out of eight cobblestone blocks.

Attack and destroy a monster.