Acquire Hardware

Smelt an iron ingot.

Archer

Kill a creeper with arrows.

Bake Bread

Turn wheat into bread.

Benchmaking

Craft a workbench with four blocks of wooden planks.

Body Guard

Create an Iron Golem

Camouflage

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

Chestful of Cobblestone

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

Cow Tipper

Harvest some leather.

Delicious Fish

Catch and cook a fish!

Diamonds to you!

Throw diamonds at another player.

DIAMONDS!

Acquire diamonds with your iron tools.

Dispense With This

Construct a Dispenser.

Enchanter

Construct an Enchantment Table.

Freight Station

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

Getting an Upgrade

Construct a better pickaxe.

Getting Wood

Punch a tree until a block of wood pops out.

Have a Shearful Day

Use Shears to obtain wool from a sheep.

Hot Topic

Construct a furnace out of eight cobblestone blocks.

Into Fire

Relieve a Blaze of its rod.

Into the Nether

Construct a Nether Portal.

Iron Belly

Stop starvation using Rotten Flesh.

Iron Man

Wear a full suit of Iron Armor.

It's a Sign!

Craft and place an Oak Sign.

Leader of the Pack

Befriend five wolves.

Librarian

Build some bookshelves to improve your enchantment table.

Lion Hunter

Gain the trust of an Ocelot.

Local Brewery

Brew a potion.

Map Room

Place 9 fully explored, adjacent map items into 9 item frames in a 3 by 3 square.

MOAR Tools

Construct one type of each tool.

Monster Hunter

Attack and destroy a monster.

On A Rail

Travel by minecart to a point a least 500m in a single direction from where you started.

Overkill

Deal nine hearts of damage in a single hit.

Passing the Time

Play for 100 days.

Pork Chop

Cook and eat a pork chop.

Pot Planter

Craft and place a Flower Pot.

Rainbow Collection

Gather all 16 colors of wool.

Renewable Energy

Smelt wood trunks using charcoal to make more charcoal.

Repopulation

Breed two cows with wheat.

Return to Sender

Destroy a Ghast with a fireball.

Smelt Everything!

Connect 3 Chests to a single Furnace using 3 Hoppers.

Sniper Duel

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

Stayin' Frosty

Swim in lava while having the Fire Resistance effect.

Taking Inventory

Open your inventory.

Taste of Your Own Medicine

Poison a witch with a splash potion.

The Lie

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

Time to Farm!

Make a Hoe.

Time to Mine!

Use planks and sticks to make a pickaxe.

Time to Strike!

Use planks and sticks to make a sword.

Trampoline

Bounce 30 blocks upward off a slime block.

Zombie Doctor

Cure a zombie villager.