Found your way back into the ruins of Rapture.

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

Joined forces with Sinclair in Ryan Amusements.

Confronted Lamb's lieutenant in Pauper's Drop.

Defeated the Preacher.

Uncovered the secret of Dionysus Park.

Gained access to Lamb's stronghold.

Reunited with your original Little Sister.

Headed to the surface on the side of Sinclair's escape pod.

Escaped Rapture.

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

Fully upgraded to the maximum number of Plasmid Slots.

Upgraded a weapon at a Power to the People Station.

Installed the third upgrade to a weapon.

Found every Power to the People weapon upgrade in the game.

Used the Hack Tool to hack an object at a distance.

Hacked one of each kind of machine.

Hacked 30 machines at a distance with the Hack Tool.

Researched a Splicer with the Research Camera.

Maxed out one Research Track.

Completed all research on every subject in Rapture.

Defeated 3 Big Daddies without dying during the fight.

Adopted a new Little Sister for the first time.

Gathered 600 ADAM with Little Sisters.