Installed the third upgrade to a weapon.

Defeated 3 Big Daddies without dying during the fight.

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

Joined forces with Sinclair in Ryan Amusements.

Killed 50 enemies using only hacked Security.

Killed 30 enemies using only Traps.

Adopted a new Little Sister for the very first time.

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

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

Rescued the Little Sister in “Worlds of Hurt” using only plasmids, tonics, the wrench, and the research camera, on Medium or higher difficulty

Rescued the Little Sister in “Worlds of Hurt” in under 15:00, on Medium or higher difficulty

The player has rescued the Little Sister in “A Shocking Turn of Events” in under 4:00