Uncovered the secret of Dionysus Park.

Defeated the Preacher.

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

Installed the third upgrade to a weapon.

Defeated 3 Big Daddies without dying during the fight.

Joined forces with Sinclair in Ryan Amusements.

Hacked one of each kind of machine.

Defended yourself against Lamb's assault in the train station.

Found your way back into the ruins of Rapture.

Open the wings of the Temple of the Fates

Win the battle outside of the Palace of the Fates

Defeat the Titan Minotaur inside Atlas

Cross the collapsing Grapple Bridge