Gathered 600 ADAM with Little Sisters.

Killed an enemy with its own projectile.

Maxed out one Research Track.

Researched a Splicer with the Research Camera.

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.

Face off with an old friend.

Batman vs the Arkham Knight.

No germs are fast enough to keep you from grabbing a bite from the floor

Apprehend the weapons dealer and lock him up in GCPD.