Confronted Lamb's lieutenant in Pauper's Drop.

Defeated 3 Big Daddies without dying during the fight.

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

Defended yourself against the Big Sister without dying.

Adopted a new Little Sister for the very first time.

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

Found your way back into the ruins of Rapture.

The player has defeated Atlas

The player has become a Big Daddy

Fully upgrade four weapons

The player has broken Fontaine's mind control

Collect or Invent 58 Tonics in the Physical, Engineering and Combat tracks