Little Sister Savior

The player has completed the game without harvesting any Little Sisters

Defeated Atlas

The player has defeated Atlas

Became a Big Daddy

The player has become a Big Daddy

Dealt with every Little Sister

The player has either Harvested or Rescued every possible Little Sister

Broke Fontaine's Mind Control

The player has broken Fontaine's mind control

Two Fully Upgraded Weapons

The player has fully upgraded two weapons

Found Cohen's Room

The player has entered Sander Cohen's personal quarters

Irony

The player has taken a picture of Sander Cohen's corpse

Defeated Andrew Ryan

The player has defeated Andrew Ryan

One Fully Upgraded Weapon

The player has fully upgraded one weapon

Completed Cohen's Masterpiece

The player has completed Sander Cohen's great masterpiece

Bought One Slot

The player has purchased one slot in any Plasmid or Tonic track

Restored the Forest

The player has restored the forests of Arcadia

Basic Inventor

The player has successfully invented at least one item

Upgraded a Weapon

The player has acquired at least one weapon upgrade

Hacked a Turret

The player has successfully hacked a turret

Defeated Peach Wilkins

The player has defeated Peach Wilkins

Quality Research Photo

The player has taken a Research Photo of the highest grade

Hacked a Vending Machine

The player has successfully hacked a vending machine

Researched a Splicer

The player has taken at least one Research Photo of a Splicer

Defeated Dr. Steinman

The player has defeated the crazed Dr. Steinman

Hacked a Safe

The player has successfully hacked a safe

Hacked a Security Bot

The player has successfully hacked a security bot

One Successful Hack

The player has performed at least one successful hack

Completed Welcome

The player has successfully completed the Welcome To Rapture Level

Toaster in the Tub

The player has shocked an enemy in the water