Acquire diamonds with your iron tools.

Punch a tree until the block of wood pops out.

Construct a furnace out of eight cobblestone blocks.

Open your inventory.

Complete "Revealing the Unseen"

Pick 50 locks and 50 pockets

Discover 100 Locations

Complete "Hail Sithis!"

Bounty of 1000 gold in all nine holds

Successfully persuade, bribe, and intimidate

Complete "Dragonslayer"

Catch the Sea Guardian