Eat nothing but Kelp for 3 days.
Stay underwater for one full day without using potions.
Place four Sea Pickles in one block.
Activate a Conduit.
Use a Dried Kelp block as fuel in a furnace.
Bribe a Dolphin.
Levitate up 50 blocks from the attacks of a Shulker.
Lead a Caravan containing at least 5 Llamas.
Use the Totem of Undying to cheat death.
Defeat an Evoker.
Defeat an Elder Guardian.
Dye your bed a different color.
Walk across the surface of a deep ocean by freezing the water with Frost Walker boots.
Respawn the Enderdragon.
Teleport over 100 meters from a single throw of an Ender Pearl.
Poison a Witch with a Splash Potion.
Kill a Mob while wearing the same type of Mob Head.
Hit a Player with a Snowball while falling into the Lava.
Push three Players into Lava using Snowballs.
Hit a single Player with 25 Snowballs in a single public round.
Use an Elytra to fly through a 1 by 1 gap while moving faster than 40 m/s.
Place a fully explored Map into an Item Frame.
Collect Dragon's Breath in a Glass Bottle.
Tame a Horse.
Dry a Sponge in a Furnace.
Power a Furnace with Lava.
Win 3 rounds in a row after one of the opponents has won 2 rounds.
Win a Tumble game whilst on the lowest layer in a Snowball Tumble Mini Game.
Stay on the top layer while winning a round in a Snowball Tumble Mini Game.
Win a single round of Snowball Tumble without throwing any Snowballs.
Stay underwater for 2 minutes.
Win 3 public Battle games in a row.
Take 100 damage in a round of a public Battle mini game.
Kill 2 players in a round of a public Battle mini game using a bow and arrow.
Win a public Battle mini game.
Kill a player while you are starving in a Battle mini game.
Open every chest in a Battle mini game arena in one round.
Kill the Wither.
Spawn the Wither.
Dye all 4 unique pieces of Leather Armor.
Eat a Notch Apple.
Create and fully power a Beacon.
Bounce 30 blocks upward off a Slime Block.
Kill the Enderdragon.
Enter an End Portal.
Throw diamonds at another player.
Play for 100 days.
Destroy a Ghast with a fireball.
Discover 17 of the 23 different biomes.
Relieve a Blaze of its rod.
Construct a Nether Portal.
Travel by minecart to a point at least 500m in a single direction from where you started.
Mine or purchase 30 Emeralds.
Mine 1,728 Cobblestone and place it in a chest.
Craft and place a Flower Pot.
Tame an Ocelot.
Cure a Zombie Villager.
Kill a Skeleton with an arrow from more than 50 meters.
Bake a cake using wheat, sugar, milk and eggs!
Kill a creeper with arrows.
Cook and eat a pork chop.
Deal nine hearts of damage in a single hit.
Construct an Enchantment Table.
Acquire diamonds with your iron tools.
Construct a Dispenser.
Gather all 16 colors of wool.
Play a music disc in a Jukebox.
Befriend five wolves.
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.
Create an Iron Golem.
Catch and cook a fish!
Wear a full suit of Iron Armour.
Craft and place a Sign.
Use Shears to obtain wool from a sheep.
Smelt an iron ingot.
Stop starvation using Rotten Flesh
Swim in lava while having the Fire Resistance effect.
Smelt wood trunks using charcoal to make more charcoal.
Brew a potion.
Breed two cows with wheat.
Construct a better pickaxe.
Use planks and sticks to make a sword.
Attack and destroy a monster.
Harvest some leather.
Construct one type of each tool (one pickaxe, one spade, one axe and one hoe).
Use planks and sticks to make a hoe.
Turn wheat into bread.
Open your inventory.
Punch a tree until the block of wood pops out.
Craft a workbench with four blocks of wooden planks.
Use planks and sticks to make a pickaxe.
Construct a furnace out of eight cobblestone blocks.
