Found 100 audio diaries.

Gained access to Lamb's stronghold.

Got through a Gather with no damage and no one getting to the Little Sister.

Uncovered the secret of Dionysus Park.

Killed 50 enemies using only hacked Security.

Defeated the Preacher.

Spent 2000 dollars at Vending Machines.

Defeated 3 Big Daddies without dying during the fight.

Bought one Plasmid or Tonic Slot at a Gatherer's Garden.

Collect 50% of the Ithildin.

Kill The Tower.

Brand all 5 Warchiefs.