Use Shears to obtain wool from a sheep.

Turn wheat into bread.

Breed two cows with wheat.

Construct an Enchantment Table.

Discover a Shipwreck.

Wear a full suit of Iron armour.

Attack and destroy a monster.

Construct one type of each tool (one pickaxe, one spade, one axe and one hoe).

Use planks and sticks to make a sword.

Construct a furnace out of eight cobblestone blocks.

Use planks and sticks to make a pickaxe.

Punch a tree until the block of wood pops out.

Capture Solitude or Windhelm