Researched a Splicer with the Research Camera.

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

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 completed the game without harvesting any Little Sisters

The player has entered Sander Cohen's personal quarters

Fully research the Bouncer

Hit the jackpot at a slot machine

Fully research the Nitro Splicer

The player has fully researched the Spider Splicer