Defeated the Preacher.

Gain the ability to drive and fly all vehicles.

Kill 50 characters in 5 seconds.

Maxed out one Research Track.

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

Confronted Lamb's lieutenant in Pauper's Drop.

Researched a Splicer with the Research Camera.

Defended yourself against the Big Sister without dying.

Complete the Hunter Boss Encounter.

Unlock the Web of Intrigue.

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

Found your way back into the ruins of Rapture.