LittleDinamit

Swim in lava while having the Fire Resistance effect.

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

Defeat an Evoker

Visit all ocean biomes

Tame an Ocelot.

Discover 17 biomes.

Kill a Skeleton with an arrow from more than 50 metres.

Construct a Dispenser.

Breed a mule from a horse and a donkey.

Poison a witch with a splash potion.

Teleport over 100 metres from a single throw of an Ender Pearl

Dry a sponge in a furnace

Defeat an Elder Guardian

Eat nothing but dried kelp for three in-game days

Stay under water for 2 minutes

Dig up a buried treasure

Find a shipwreck

Find an underwater ruin

Tame a horse.

Use a cauldron to dye all 4 unique pieces of leather armour.

Power a furnace with a kelp block

Kill a mob while wearing the same type of mob head.

Use a Hopper to move an item from a Chest Minecart to a Chest.

Connect 3 Chests to a single Furnace using 3 Hoppers.

Craft and place a Flower Pot.

Bake a cake using: wheat, sugar, milk and eggs.

Cure a zombie villager.

Brew a potion.

Power a Furnace with Lava

Destroy a Ghast with a fireball.

Relieve a Blaze of its rod.

Craft and place a Sign.

Cook and eat a pork chop.

Create an Iron Golem.

Acquire or spend 30 Emeralds by trading with villagers.

Construct a Nether Portal.

Place 9 fully explored, adjacent maps into 9 item frames in a 3-by-3 square.

Stop starvation using Rotten Flesh.

Mine 1,728 Cobblestone and place it in a chest.

Build some bookshelves to improve your enchantment table.

Wear a full suit of Iron Armour.

Construct an Enchantment Table.

Harvest some leather.

Breed two cows with wheat.

Befriend five wolves.

Kill a creeper with arrows.

Smelt wood trunks using charcoal to make more charcoal.

Collect a fish in a bucket

Feed a dolphin fish to have it lead you to treasure

Throw diamonds at another player.

Turn wheat into bread.

Acquire diamonds with your iron tools.

Construct a furnace out of eight cobblestone blocks.

Catch and cook a fish!

Use Shears to obtain wool from a sheep.

Smelt an iron ingot.

Construct one type of each tool.

Make a Hoe.

Attack and destroy a monster.

Construct a better pickaxe.

Use planks and sticks to make a sword.

Use planks and sticks to make a pickaxe.

Craft a workbench with four blocks of wooden planks.

Open your inventory.

Punch a tree until a block of wood pops out.