Shock an enemy in the water

Successfully complete the Welcome To Rapture Level

Perform at least one successful hack

Successfully hack a security bot

Successfully hack a Vending Machine

Successfully hack a Turret

Successfully hack a safe

The player has defeated the crazed J.S. Steinman

Successfully hack a Security Camera

Purchase a Plasmid Slot or Tonic Slot in any track

Take at least one Research Photo of a Splicer

Take a Research Photo of the highest grade

The player has defeated Peach Wilkins

Acquire at least one weapon upgrade

Invent at least one item

The player has restored the forests of Arcadia

Fully upgrade one weapon

Successfully complete 50 hacks

The player has completed Sander Cohen's great masterpiece

Purchased every slot in one of the Plasmid or Tonic tracks

The player has defeated Andrew Ryan

Fully upgrade two weapons

The player has broken Fontaine's mind control

The player has become a Big Daddy

The player has defeated Atlas

Fully upgrade three weapons

Complete the game without harvesting any Little Sisters

Fully upgrade four weapons

Either Harvest or Rescue every Little Sister in the game

Fully research the Leadhead Splicer

Purchase every slot in all four Plasmid and Tonic tracks

Collect or Invent 53 Tonics in the Physical, Engineering and Combat tracks

Fully research the Thuggish Splicer

Invent all possible ammunication types

Fully research the Spider Splicer

Take at least one photo in every research group

Fully upgrade five weapons

Fully research the Houdini Splicer

Fully research the Rosie

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

The player has entered Sander Cohen's personal quarters in Mercury Suites

Fully research the Little Sister

Fully research the Nitro Splicer

Fully research the Bouncer

Acquire all upgrades for all weapons

Complete the game on the hardest difficulty setting

Hit the jackpot at a slot machine

Rescued the Little Sister in “The ‘I’ in Team”

Successfully invent at least 100 items

Max out all possible research

Rescued the Little Sister in “A Shocking Turn of Events”

The player has beaten the game on survivor difficulty.

Rescued the Little Sister in “Worlds of Hurt”

Complete the game on Hard difficulty without using a Vita-Chamber

Rescued the Little Sister in “The ‘I’ in Team” in under 3:00

Find every audio diary

Found all collectable Roses in “The ‘I’ in Team”

Complete the game on Survivor difficulty without using a Vita-chamber

Rescued the Little Sister in “The ‘I’ in Team” without destroying any Machine Gun Turrets

Found all collectable Roses in “A Shocking Turn of Events”

Charged up the Ferris Wheel 9 different times in “A Shocking Turn of Events”

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

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

Found all collectable Roses in “Worlds of Hurt”

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